It can only get better! (?)

[WindexGlow]

Physics; probably not.
Graphics; possibly. Though I doubt they'll do too much with making the engine better.
Puzzles obviously, and I hope they have more of them. I can only think of about 3-5 things in overture that were actual puzzles =[

For enemies; I think it's safe to say that Overture will eventually use the monster-man from the tech demo that never made it. For some reason, the team refuses to let me use that model ='[
Won't say why though.