tech trading only what you've researched
First of all, as I mentioned already, that is a huge handicap to the AIs so if you feel they aren't strong enough perhaps you should consider not selecting that.
The "continent of perpetual peace" Incas/Persians/Carthage has just been teching for 100s of turns at this point and not attacking or expanding. Just tech tech tech. Corporations are exploding over that continent. They arent even hostile by cancelling trade agreements or anything like that.
You seem to think that is a problem but I'm not sure why? Civ is a game about building a civilisation, it doesn't have to be a big civ to be competitive. A tight number of cities with a couple of good tech partners can lead to diplomatic / space or culture wins. In most of my games I rarely have more than 9 cities, often less.
I start to check the victory screen...its around the 1850s and Persians are close to getting a culture win, Incas are exploding through tech and building space ship parts, and Carthage has nukes but isnt try to win at all. Just occasionally shifting its navy around...
So you have 2 AIs trying to win - that's fine by you presumably? Do you think Carthage should start nuking it's trading partners because they're going to win? I would hate a game like that to be honest. Why should they turn on their friends just out of spite? As Karadoc says it would make a mockery of the whole Diplomacy system.
So, to me, its clear that I lost. Even if I make peace with the Zulus I will have to do 2 things...take 15 turns to sail across the ocean, burn down one of the Persians top cultural cities to stop their win, and then burn down the Incas Capital to stop their space race...I will have to do this with infantry and artillery and cruisers vs tanks and nukes and battleships.
You're losing because the other continent has not had to make a huge investment in war and thus has teched way ahead of you, to me that's a good thing.
Who will actually win? Probably a coin toss between the Persians and Incas. Does either one actually realize the other is close to winning? No. Will they do anything to stop the other from winning? No. After the struggle of the whole game, they could care less if they win or not.
I don't understand your analysis here - both the Persians and Incas are heading for a victory but you think they should give up aiming for a win and instead concentrate on stopping the other one winning?
Carthage/Rome are the saddest of all, no chance to win, and neither have tried to do anything for 100s of turns.
So if they have no chance of winning they should just turn into idiots disregarding all the relationships that have built up over the centuries?
I feel like the distant ais went to sleep and did nothing but acquire tech. And that is SO BORING to me.
I think this is the nub of our disagreement, you enjoy war games and I don't. War is a necessary part of a game like Civ but it's not the main point. What type of victories do you normally get / aim for? 70% of mine are Cultural, about 15% space ship, 10% diplomatic with 5% Conquest / Domination. I regularly have games where I am not involved in a single war and that's fine by me. It sounds like my games would bore you silly

(@Karadoc - would be interested to know what type of games you prefer, I suspect you are a war mongerer as well lol)
Both people benefit from trade and the ai should only be cancelling trades/declaring war/engaging in extra espionage missions against someone if they are within 50/75 or whatever turns from winning.
Why should relations magically change just because someone is close to winning, that would just nerf the whole diplomatic system and be a mess. Fair enough if Shaka or Monty do it as they are aggressive psychopaths but not everyone please.
Im disappointed you made the ultra extreme bad example of the ai not so much playing to win, but punishing itself illogically as a way of trying to discredit the idea entirely. Sad that you claim thats logic.
I think it's totally logical - if you don't like where "play to win" leads perhaps you need to re-consider? Under a play to win scenario why would any AI ever vote for anyone but itself?
And AGAIN, if this is so too threatening for more casual players, have it as an option in the custom menu, or tie it difficulty level. Im not trying to force it on you, just increase replayability.
I don't know what you mean by Casual players - certainly I play at Noble / Prince if that's what you are getting at. I definitely think K-Mod plays 1.5 - 2 levels higher than Standard BtS, I would like to see the balance restored so that Noble is a good challenge but not impossible for ordinary players. Certainly an option would be great if that were feasible, that could keep everyone happy.
Tech civs= cancel trades and ask others to cancel trades, hire other ais to attack the close winner, wont trade tech to near winner
Yuk, I think the peaceful Civs have been nerfed enough in K-Mod. Recent game with Ghandi and Mansa on the same continent as me I gave up after they both demanded multiple techs from me over 20 turns, I had level power with Mansa and was stronger than Ghandi. It wasn't a real threat but it meant either screwing up diplomacy or letting them have the fruits of my labours for nothing. Not an enjoyable game.
As far as diplomacy goes....I think it would be a good idea to "loosely" limit the number of "Friendly and will never betray" type relations to one per civ. I think that might cut down on peace religion island.
Again hate this idea - if it was to be implemented perhaps do it the other way around and limit the number of aggressive relations per civ. Don't really like that either but would prefer it to your idea.
I think religion could use a small nerf iimo.
Oh man don't get me started on that, religion is badly nerfed in K-Mod IMO

Because the AIs don't switch so readily to a religion you see less religious blocs and the possibility of religions disappearing is cool in theory but makes cultural games a lot more of a micro-management drag.
I hope I have properly engaged your points this time, it's a good debate but I suspect the root of the disagreement is that we enjoy different aspects of the game.
Take care.