AI is where a lot of these rpg turn-based games suffer. Esepcially with open-ended possibilities. It's not like chess where the AI can literally enumerate every possibility for the next 10-20 turns and score the best one.
But even an AI that can approximate outcomes 2-3 turns ahead would be a huge milestone. One that looks for "I win" conditions such as finishing off opponents, executing plans/combos over multiple turns. Just imagine coming upon a group that has 2 mages, and they use both teleports back-to-back to move a low fire resist character into lava? I can just imagine the player screaming that's not fair...but it is, and players would appreciate an AI that can rise to their level.
They seem to have a pretty big success on their hand, I'd get some really smart programmers and dump a few thousand man hours just improving the AI and combat systems, then build some an x-com style campaign, and you got a whole new game players would love.
