OK, not touching unlimited SOD at all. Let's compare 1UPT with limited stack (LSOD). Also, we assume LSOD has rather small limit (3, for instance) - otherwise it will not be different from SOD.
1. Tactics.
LSOD have less objects on map and there only 2 types of them - fast and slow. Some variations are possible, but not critical.
2. Micromanagement.
Let's measure micromanagement here with a simple value - time needed to make your turn. In fact you need MORE time to make moves with LSOD, because it adds additional map layer. You need to check each LSOD to see who are inside, while with 1UPT you could see everything you need to make decisions on one map layer.
To both of the above statements, the answer would likely be to make only units of the same type stackable. This still gives you the tactical part that you are so craving, but greatly reduces the micromanagement aspect of all the individual units. (That is just my quick answer!)
3. Realism.
In civilization both time and distance scales are relative. And since we don't know how many kilometers is a tile, we can't say how many units it may host.
Realism/Scale,
Thornburne, what you are doing is assuming a tile represents thousands of miles squared, why do you assume so, Civ is a fictional game, whos to say its landmass of the entire civ planet will be anything like ours, perhaps Civ is based on pocket universes with planets of much smaller dimensions, perhaps the only thing "too scale" in Civ are the humans that have setteled there, which if you look at them, appear to tower over the landscapes like giant monsters.
As I have said, nothing about Civ Shouts out "To Scale", the Units are (according to you) a thousand miles squared in size, (yeah because thats believeable), The cities are equally stupendous, the rivers in the game can be walked over like a puddle, Infinite units in a X amount of land is unrealistic, whos to say the tile doesn't represent 10mm of land, you only assume it represents thousands of miles sqaured because you want to try and fit the landscapes into your idea of reality, Civ has barely any basis in reality, I mean we arent seeing landscapes that defy laws of physics or anything with some really cool looking mess on the map like a bunch of wiggly squiggly lines, but thats about as far as it goes in reality. It tries to simulate a game where humanity can develop over some 6,000 years in a 4 hour game span, quite an accomplishment that this is achieved, however "Realism" and "Scale" goes right out the window, and argueing your points based on what would be believeable or not is entirely pointless. Half of Civ is unrealistic but you may not yet throw your PC out of the window because of it, Civ still brings fun and enjoyment to the table, just because games aren't "realistic" doesn't make them unplayable, I play plenty of sci-fi games which really try to be as unbelieveable as possible, sometimes the fictional stuff is fun too

.
Gee... CIV is fictional? Then why are Rome and Egypt and George Washington and Queen Elizabeth in the game? If not putting any reality in the game makes it better, then why not have names like
Dallon and
Tyrria for Civs and such? CIV is a game that is based on history and reality. I like sci-fi and fantasy games, too. But this is not a sci-fi game. The fantasy comes into the "what if" scenarios that occur as you play. That goes out the window when the concept is completely altered and reality is stretched too thin. Yes, one has to suspend certain notions when playing the game. But too much suspension, and the magic of the game is lost!
To that note, you say that the sizes of the tiles are purely my own imagination... Take a look at the standard Earth maps that ship with the game for reference. When compared to a map of earth, each tile covers a huge amount of space. To say that a single tile is only large enough to hold one unit is crazy. It is too much!!! OUPT works when you play a game on a more focused scale. The scope of Civilization is far beyond that. I could go on... but I have to go out and don't have much time. I will end this part by saying that if you envision CIV as how you described... that is fine! Don't rob me of how I imagine and interperut the game!
Also as for "Surely LSOD is better than both SOD and 1UpT, I could prove it if I had time right now" We dedicated an entire thread to Limited Stacks, discussed the implications on mechanics and gameplay, and no It really would not, take our word for it, or search "Limited Stacks" to find the thread. Arioch, I and a couple others have already explained the basic reasoning, none of us wants to discuss the point in huge detail, at least not in this thread, please find the original topic about "Limited Stacks" and read that, and then if you haven't changed your opinion at all, make a post there and I will discuss it further,
So, the only way that I can discuss this further is if I go to this other thread (which I shall do when I have the time) and read every thought and argument... then change my opinion... only then I may come back and discuss it further? I'm sorry, but that seems a little arrogant. I would hope that after reading it, should I conclude that I am still right, I may return and state so as well.
PS: I did a search and went through a few pages but could not locate the thread you were talking about. Could you please post a link to the thread?
Pre-emptive judging is very powerful, I must admit. I dont know if 1upt is better than the old ways. And I am certainly not slamming you. It is for sure different. But your whole argument is a self inducing truth. Or a self fulfilling prophecy. If you say you will not like the game because of what ever reason. Than you dont like the game for exactly that reason. If you keep an open mind, you can still decide whether or not to like it. Anyway.. Its not really possible to argue about taste. If you dont like it, you dont like it. End of story, I dont tell you otherwise. I just tell you the consequences but I dont have to understand your point of view and I dont have to agree with you either.
You make a good argument, Semmel! Still, too many are arguing that OUPT is the HOLY GRAIL of the Civilization franchise and chastizing anyone who disagrees or offers other perspectives. I did not mean to say that you, specifically, were slamming me, but, like politics, a different view then the vocal majority or minority turns one into a pinata. Unfortunately, I am Sicilian and Irish and refuse to go down without a fight
Anyway, yes, I may just well be setting myself up for a self fulfilled prophecy. But all I want is for a game that will satisfy me (and as many other people as possible). Sadly, it looks like I will have to wait for somebody who is like-minded to me and skilled at programming to save the day with a mod that provides that. Unfortunately, I have found with CIV IV that too many mods had elements I liked, but I still have not found that perfect combination.
In the end, my biggest problem with OUPT is that while I remain skeptical, others have grasped it with varying degrees. Some truly like the idea. Some only like it because Firaxis says that it is great and Firaxis can do no wrong. I just feel that Firaxis has totally disregarded my feelings as a fan of the series for what they think (whether they turn out to be right or not) as the best path for the game. I love Firaxis and Sid, and everybody, but I know that they are human. They could very well be wrong.