Tactical AI:

1) Must defend if he can perfonrm range attacks and player have no range units.

2) When attacking must choose units with high attack and low defence first.

Strategic AI:

1) I think if a player becomes very strong, then AI civilizations must form alliance against player, and attack. There is no other way to survive for them. 

2) AI must explore world and hire new champions, not just buld new cities.

Game mechanics:

1) Tactical battles all in the same key, they lack unit types variety (attack type of almost all monsters - melee), add more casters and range units.

2) Research is slow. Very slow. I have super strong champions, huge cities, but i still have no archers/magic/can't hire level 4 champions/ect.

3) There is no caravan limit? Too much caravans i think. 

UI:

1) Please, show me cities with empty production list and units with movement points automatically.

2) If someone killed my caravan - show me that place.