[ywl]

Originally posted by NTJedi:
Example=
Destroyer(Pillages lands which have been owned by opponents for long periods of time)
Architect(focuses on improving lands)
Arch-Mage(focuses on magic)
Barbarian(mainly uses brute force)
Insanity(unpredictable actions= randomly flips between all personalities every 10 turns)
Cutthroat(one out of three armies will be sneaking during movement)

I don't know the code but such rough Category of personalities doesn't seem to be too impossible.
1) Destroyer: give the AI an option to pillage a province unless it's around the capital. Adjust the probability of how often this happened and you'd get it. This particular AI is not likely to win unless he is using dead Ermor or Carrion Wood of Pangaea. But he could be around to be a spoiler for everybody.

2) Architect: hmm... there isn't much to improve on the land other than building castles.

3) Mage or Barbarian: if there were a matrix of the AI's preference over different units, the difference would be a simple tweaking of numbers. Though such a matrix itself may not be easy to implement, because of the large number of possible units in the game.

4) Cutthroat: the AI doesn't use stealth troops particularly well. It might be hard to implement.