I couldn't comment on everything or this post would never be finished:
I don't think it's a bug in the DLL. You can't build Levees in coastal cities but you can build Dikes. That leads me to believe the change was intentional.
Compared to the Inuit and Haida, The Anasazi and the Mississippians seem equally worthy of inclusion. The Inuit are still my first choice; they are a truly unique civilization. I might prefer the Mississippians to the Anasazi, not only for the reasons Simon cites, but also because they expanded farther and endured longer, so far as I can tell. (The Hopi, who claim the Anasazi as their ancestors, survive to the present day; but so do a number of American Indian nations that participate in broader Mississippian culture.) At the very least, it should be easier to compile a full list of Mississippian settlements.
I wouldn't be so quick to dismiss colonial civilizations. For one thing, some players prefer games that begin in the Renaissance or Industrial Eras. With the advanced starting era option, they don't need to construct what-if scenarios for America in the ancient age. More to the point, many "traditional" civilizations also trace their origins to settlers or conquerors; the difference being that their migration or annexation was complete by the sixteenth century. The way I see it, the Byzantines were basically Romans who conquered the eastern Mediterranean and eventually split from Western Rome. Rome is to Byzantium what England is to America and France is to Quebec; am I right?
I'm not sure I follow. How can you argue that French colonies should be included under France - and that America should be the first to be struck off the list of civilizations - yet make an exception for Brazil? The indigenous people of Brazil did not build cities or keep written records. They remained migrant hunter-gatherers; even today there are isolated tribes living in the Amazon. Any Brazilian civilization would be based exclusively on Portuguese colonial history, with Sao Paulo and Sao Vincente among its earliest cities. Without a doubt, Brazil is much much better represented as an extension of the Portuguese civilization. Unlike any other European colonial possession, Brazil actually became the seat of the Portuguese empire when the Portuguese royal family fled to Rio de Janiero; it was declared a sovereign kingdom, united with Portugal shortly thereafter. What more is there to say? I urge you to reconsider your decision on Brazil.
A Caribbean civilization, with a focus on the Taino people, might better represent mixed indigenous-colonial Latin America.
The Tamils and Kushans are fine additions to HR but South Asia still lags behind other regions, including Southeast Asia and its four civilizations: Thai, Viet, Khmer, and Indonesian. On this point, I completely agree with Simon Jester. It is worth reusing art to improve diversity.
Is it possible for a single leader to be linked to multiple civilizations? (I know at least one mod for Windows allows it.) If so, you could make Timur a leader of the Mongols, Turks, and Persians; that would be the best way to handle the Timurids, I think. While you're at it, you could make Karolus/Charlemagne available as a French or Roman leader, too. (Edit: No, not a Roman leader, I don't know what I was thinking.)
I just can't seem to get these things right: yes, I meant Australasian. (As a Canadian, I know exactly how it feels to be identified with that big annoying neighbour next door.
) Civ Gold actually includes Hone Heke of the Maori among its 100+ leaders but the leaderhead is hardly top quality; Heke looks like a generic East Asian leader with some tattoos and a palette swap.
I agree that a little variation can do no harm. There are plenty of other food sources in the tropics: Pigs, Bananas, Sugar, floodplains, scattered Cows and Corn. The only food resources you won't find there are Sheep and Deer. I see no cause for concern.
The city lists annoy you too? And here I thought I was the only one.
I was about to suggest this myself. If you are eager to spread a particular religion, you'll adopt Organized Religion. Otherwise, you'll wait for monasteries and hope for the best. If anything, I think monasteries come too early in BtS: the whole world turns Buddhist or Hindu before any of the later religions are founded.
Hmm that's strange. I wonder if the game is interpreting it as requires a river OR coast? I'm not sure I can do much about that if that's true, it'll be a bug in the DLL.
I don't think it's a bug in the DLL. You can't build Levees in coastal cities but you can build Dikes. That leads me to believe the change was intentional.
The Inuit would be fascinating to add. There is one well-made Inuit leader model available but sadly almost nothing else at all in terms of art. The Haida are probably the best choice for a Northwest American civilization. As mentioned previously though, I prefer to add the Anasazi/Hopi if it's possible to add another North American civ.
If there's only one, I'd advocate the Mississipians over the Anasazi/Hopi, as they seem to have been more on the road to the kind of riverine Neolithic/Bronze Age civilization that we recognize as a global pattern. But that's just me, and I am not an expert on the field.
Compared to the Inuit and Haida, The Anasazi and the Mississippians seem equally worthy of inclusion. The Inuit are still my first choice; they are a truly unique civilization. I might prefer the Mississippians to the Anasazi, not only for the reasons Simon cites, but also because they expanded farther and endured longer, so far as I can tell. (The Hopi, who claim the Anasazi as their ancestors, survive to the present day; but so do a number of American Indian nations that participate in broader Mississippian culture.) At the very least, it should be easier to compile a full list of Mississippian settlements.
I'm not going to add any colonial civilizations*, to be honest I'm very tempted at times to remove America. It feels reasonable and fun to me to create 'what-if' Renaissance to Modern eras for civs that never made it that far. But creating 'what-if' Ancient - Medieval eras for colonial civs just feels ridiculous. These colonial countries already have such history - France and the various native American tribes.
I wouldn't be so quick to dismiss colonial civilizations. For one thing, some players prefer games that begin in the Renaissance or Industrial Eras. With the advanced starting era option, they don't need to construct what-if scenarios for America in the ancient age. More to the point, many "traditional" civilizations also trace their origins to settlers or conquerors; the difference being that their migration or annexation was complete by the sixteenth century. The way I see it, the Byzantines were basically Romans who conquered the eastern Mediterranean and eventually split from Western Rome. Rome is to Byzantium what England is to America and France is to Quebec; am I right?
I'd rather leave colonialism to the game itself. What if the French colonized the Inca instead? What if the Aztecs colonized France? Adding something like Quebec just feels too deterministic for my liking. I'd rather add France's new world colonies to France itself.
*As already mentioned I'll make an exception for Brazil. Ethnic and cultural mixing happened very quickly and extensively there and allows a much more continuous history and identity compared to most other colonial regions.
I'm not sure I follow. How can you argue that French colonies should be included under France - and that America should be the first to be struck off the list of civilizations - yet make an exception for Brazil? The indigenous people of Brazil did not build cities or keep written records. They remained migrant hunter-gatherers; even today there are isolated tribes living in the Amazon. Any Brazilian civilization would be based exclusively on Portuguese colonial history, with Sao Paulo and Sao Vincente among its earliest cities. Without a doubt, Brazil is much much better represented as an extension of the Portuguese civilization. Unlike any other European colonial possession, Brazil actually became the seat of the Portuguese empire when the Portuguese royal family fled to Rio de Janiero; it was declared a sovereign kingdom, united with Portugal shortly thereafter. What more is there to say? I urge you to reconsider your decision on Brazil.
A Caribbean civilization, with a focus on the Taino people, might better represent mixed indigenous-colonial Latin America.
Well I've added the Tamil and the Kushan (though I've focused on their Central Asian origins more) for that very reason. I'd like to see more South Asian civs, my picks would be the Bengali, Sinhalese or Burmese. Broadening the scope a bit I'd also love to include the Indus/Harrapan civilization or even Aratta/Jiroft culture. Unfortunately South Asia is also the region least represented by available art, severely limiting what we can do here.
Yes. To be fair, you can (should, perhaps) remove some of the existing civilizations- no obvious candidates suggest themselves, though. In the limiting case, when you have half a dozen civilizations that coexisted in medieval Europe but only one for all of India, maybe you should reexamine your allocation to reduce the Eurocentrism of the mod. In a number of places you can do this without changing the unit art.
I know you don't like having civilizations share art, apparently, but in this case I think it's well justified if you want to improve diversity within the mod.
The Tamils and Kushans are fine additions to HR but South Asia still lags behind other regions, including Southeast Asia and its four civilizations: Thai, Viet, Khmer, and Indonesian. On this point, I completely agree with Simon Jester. It is worth reusing art to improve diversity.
Timur and his dynasty are very tricky to deal with. A case could reliably be made for including them in the Mongols, the Turks or even greater Persia/Iran. There's no perfect answer but I don't feel they are worthy of their own civilization in HR. All of those cities that you list already appear in the Kushan or Persian citylist.
Is it possible for a single leader to be linked to multiple civilizations? (I know at least one mod for Windows allows it.) If so, you could make Timur a leader of the Mongols, Turks, and Persians; that would be the best way to handle the Timurids, I think. While you're at it, you could make Karolus/Charlemagne available as a French or Roman leader, too. (Edit: No, not a Roman leader, I don't know what I was thinking.)
Australian?!? I presume you mean Australasian... (My country, New Zealand, has a lot in common with Ireland and Canada: we all have big annoying neighbours that like to take credit for our accomplishments)
Despite being a Kiwi and indeed part Maori I do feel that the Maori are best represented by Polynesia. I would sorely love to add a quality Maori leader though; if I ever find the time or talent to try my hand at leaderhead creation I would make one. Indeed I am most probably going to leave the Tactical/Traditional trait combo in reserve just in case I or someone makes Te Rauparaha or Hongi Hika.
I just can't seem to get these things right: yes, I meant Australasian. (As a Canadian, I know exactly how it feels to be identified with that big annoying neighbour next door.

Rice
I've given Potatoes the same food yield as Rice, one less than Corn and Wheat. Personally I think a little variation is a good thing so long as there are other good sources of food available in tropical areas to compensate (which I don't believe there are enough of yet). I don't really have any major qualms changing this if it's deemed better for balance though.
I agree that a little variation can do no harm. There are plenty of other food sources in the tropics: Pigs, Bananas, Sugar, floodplains, scattered Cows and Corn. The only food resources you won't find there are Sheep and Deer. I see no cause for concern.
German Citylist
It actually begins with Aachen. I like citylists to be primarily chronological/regional with capitals and other key cities shifted up a bit but never outside their era. Civ4's standard citylists bug the hell out of me and I plan to remake all of them eventually.
The city lists annoy you too? And here I thought I was the only one.

I want religions to have a chance to 'do their own thing' for a while before you get too much control over them. I think it creates for more interesting diplomacy in the middle ages and it seems more historical too.
However this reminds that I was considering swapping the tech requirements of Organized Religion (currently Priesthood) and Caste System (currently Divination). This would enable Organized Religion a bit earlier and thus missionaries too. Caste System is available a bit before its truly useful anyway so harm done shifting it later.
I was about to suggest this myself. If you are eager to spread a particular religion, you'll adopt Organized Religion. Otherwise, you'll wait for monasteries and hope for the best. If anything, I think monasteries come too early in BtS: the whole world turns Buddhist or Hindu before any of the later religions are founded.