one of my biggest pet peeves is the computers aggressive settling of land- land that is completely contained by my culture, or near my cities. Whatever. I think think the concept of "tile ownership" should be expanded- culture is a fantastic system and I love it, but I would like to see the notion of "claiming" land put in to the game. Along with it, you should be able to buy and sell claimed land. Explorers can have a claim function added. This 3x3 piece of unimproved land is now yours (as if it were part of you cultural border, perhaps). If someone builds a city there it is an ACT OF WAR. Think someone is claiming an unreasonable amount of land? Fine, it's worth going to war over. This would allow historical equivalents of the louisiana purchase to take place. My other huge pet peeve- The trading system is great, but the AI is so stupid it's not fun. It seems absolutely impossible to pry a resource or luxury out of their hands if they have nothing extra. Sure they should ask a LOT more, but it should be possible. Likewise, sometimes I can ask for one of their cities, and offer in exchange MY ENTIRE EMPIRE and they would "never accept such a deal". Or when I've completely obliterated a civilization, and they're down to their last city with no units left and it's bombed to hell, and I offer them peace condition on them giving me several techs and they won't do it? Or conditional on giving me a luxury they have only one of and they won't do it? On the topic of trading system- add arms dealing, add more things to be negotiated for (I'll pay you to attack/ stop attacking them, etc) Add alliance. add technological alliance (research things together, advanced communication techs required) add civil war. rework corruption system. Find some other way to penalize expansive empires or give bonuses to small empires. pollution I don't mind so much. It would be nice if workers would automatically rework a once polluted square after you clean it. make a better way to handle stacks of artillery / bombers. b click wait.. b click wait.. b click wait.. x 30 gets kind of annoying. somehow mitigate the importance of having strategic resources. Whether or not you have Iron, saltpeter, oil, etc seem to make or break a game because the computer will ask outrageous prices for them. Realistic, but frustrating.