[Menschenfresser]

I agree, the AI does some pretty cool things. My first game is on the easiest level, with max amount of civs. I started on what seems to be a narrow but long (north to south) continent. Germans to the north, French to the south. Their borders extend across the continent so I cannot expand any further.

I noticed that as I moved fighting units near to another civs borders, they would immediately mass a group of units just inside their border.

And I cannot get a fair trade out of these bastard AIs. They always want about 150% the value of what I am requesting.

Yes, if you still play 2 occasionally, get 3. Think of it as an expensive and worthy upgrade. If you have no real use for 2 anymore, then keep weighing the consequences. It is definitely (so far) not worse than its predecessors...question is, is it better?