I'm afraid MMO's have for the most part reached maximum entropy. Sure there are tweaks that can be made, but there will be no new big leaps until the breakthrough of AI.
With that breakthrough, you will finally have a true living virtual world.
That doesn't explain why mob AI in TOR looks like something from an Xbox action game. Mob AI in other MMO's and solo games (including most Bioware games, they do know how to program AI) is head and shoulders above any I've seen in TOR.