My only two gripes with this game.

[OzzyKP]

I also don't like that Great People count. I like keeping a great person around to have for a special wonder or expensive science (or to leap frog through the tech tree with multiple great scientists), but it's expensive to keep great people sitting around doing nothing.

I definitely agree on this point, I do the same thing, and it hurts to have to pay through the nose for great people. It is bad enough their tile-improvements are all pretty lousy, so you almost have to hold on to them longer for the right time to pop something.