Hopefully this environmental/AI system works as well as it sounds. Then I can shove it in the face of all the STALKER fans who claim that STALKER has the best environmental/npc AI ever (you know, despite it being so buggy that it doesn't matter), and can only do so with a segmented, loading screen world, and not an open world.
I also like the idea of not determining your characters core path before you get a chance to play. I've always hated that, because I inevitably come to a spot in a game where I go "dammit, I should have picked that trait instead," but at the very start of the pre-game, there's no way you could tell anything about that.
Also, having fluid conversations while being able to move around and progress with the game... f'ing awesome. I hate the stilted mannequin conversations in Mass Effect that totally suck you out of the action.