I have to agree on the Poland map. Played a great game on it yesterday.
It's often occurred to me that a mega-US map would interesting, with county-sized provinces- like the Washington, Texas, Georgia maps- but covering the whole US.
3140, according to Wikipedia.
I certainly don't think you'd want to play a 1v1 game on it, but it could make for a wonderful long-term many v many game.
I'm also drawn to the idea just to see if it can be done. Something on that scale would be a hell of an achievement.
Worldbeing: hmmm, I can try ;] I have already made Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut and New York. I've started from those small states ;] Making that map will take a while ;P
Hedonism bot: Which bonuses are overpowered? I thought it's quite well balanced. There is another (I hope the last one) version of 'Poland Big' map, it's waiting over week ;]
The Poland map was better when it was +3 per city. Right now most of them give too big bonuses compared to how easy they are to hold (especially cities of Pomorskie - players starting there are pretty much guaranteed to take control of whole Coast, thanks to the huge, easy to get bonus)