" I wish I could play civ IV with one unit per square. D: I hate stacks. "This is mostly how I feel. Need to experiment a little more, there are some things I like: 1 unit per tile, city states have potential, gold buyout of units and building is more flexible, cuture is more explicitly layed out, and I like the social policies (I think).
But Civ IV just rewarded you much better for painstakingly selecting the very best tile for your city. And the first game I played I got the #3 ranking (lincoln). In Civ IV the best I ever got might have been whatever is above Ethelred the Unready (like #28). And I spent a good amount of time on Civ IV. So obviously it's too easy.