Most important improvement for Next-Gen games. Pick...

[HoloDust]

Thanks everyone for response, I wanted to see, from technical standpoint, what field people find that is most important to improve (AI for me, btw). I agree with posters that mentioned gameplay, but since it's game design related and not tech (for most part), it is not in the poll.

@Kittler - Destructible environments come under physics - as Red Faction: Guerrilla nicely demonstrated, it can be integral part of gameplay, and once games move away from current polygon-based game engines and start using voxel-based engines I'm guessing we'll see a lot more of that.