I honestly like the fact that Allies change opinon based on how powerful you are.

It would make alot more sense to me to see other nations get hostile as you start to rule the world. Rather then just arbitarily attacking you.

We may not get coalitions as a faction, but it seems likely that if you become a world power the other nations may become a coalition against you.

Unlike mtw2 where no matter what you did by turn 5 the nations of the world formed a coalition against you

MTW2:
"DID HE JUST BUILD A STABLE?"
"UNITE THE NATIONS FOR A ATTACK"