Wow, this thread really exploded. Let me address some points made.
To start off, I'm not usually a Deity player, I play vanilla Civ 4 on emperor, I just play C2C on Deity with no flex difficulty, because it is so damn easy.
The thing with gold and expansion is, that in earlier versions (v33 or v34, can't remember), gold was the big bottleneck for expansion in the ancient era. This kept the player on a lower number of cities vs the AI and helped the AI to keep up at least until late classical/early medieval, when the players gold income started to explode. Now, I'm pretty much immediately happiness capped and as I can handle happiness better than the AI I can actually expand more than the AI is able to.
I earn several hundred gold per turn in the ancient era, it becomes completely meaningless, by the time I can actually do gold buyouts, I have nearly a million in the bank, earn several thousand per turn.
I agree with Noriad, trying to fix the game, by reducing the content and removing its' unique features is not the way to go. I know how limited you are by the Civ4 engine, but after all you have made the mod as big as it is, so making the AI and the balance work with it is better than trimming the mod down, so that it can work.
If Civ4 can't give what the mod needs (which is evident by the ungodly long turn timers anyway), maybe it's time to switch this project to another engine. But then's the question, whether there even is the motivation to start all this again with the Civ6 engine or whatever.
@tmv
Because the AI starts with additional techs on high difficulties, giving me tech diffusion right from the start to help me catch up, tech diffusion pretty much doubles my beakers for the rush to oral tradition.
@strategyonly
what? noble is harder than deity??
@Joseph
That's the problem, C2C to me means massive map and very long timescale, as well as using the mastery victory, playing on a large map with marathon gamespeed wouldn't feel like C2C to me. Considering the massive scale of this mod, I'd also expect it to be primarily balanced for giant maps and slow speeds. What is the point of those features, if they are not be used? They are defining features of the mod to me.
I always play without revolution, I never use play now nor do I play with old world. Flex difficulty is off.
I also don't pick civs, I play random. In the 4 games I played I got Frederick(Germany), Hiawatha(Iroquis), Selassie (Ethopia) and Suryavarman(Khmer).
AI civs between 20 and 30. As I said, I like massive games with C2C and I feel, if I played the mod on a setting more in norm with a vanilla game, it would lose it's unique charme.