Grant us the ability to play as more than one civ in each game. If I am playing a game with three civs, grant us the ability to control all three, or just two of the three, or just one. Also grant us the ability to be able to let the AI take over the civs we control in the midway, and regain control of the civs later when we choose to. For example, if I am in a game where I am controlling China, Greek, and England, let us have the option of being able to relinquish control of Greek to the AI if we choose to. And later, we might decide we want to regain control of Greek again, and we should have that option, too.