2. Tech-tree. Ultimately everyone starts and ends at the same place. Maybe it is because I am ending the games too late, but there isn't a significant differnce in selecting technology paths, they all quickly start converging again and all the civiliazations end up being identical. even the unique units become obsolete. I would love to see a tech tree that is so expansive that it requires some decisions on what to focus on. I would also like to see more cultural differences, each civ should have a late game unique unit.