The one thing that kinda bugs me in CE is the last level, specificly the engine room. It was actually quite funny to see it in an almost unharmed condition, while the rest of the ship was basicly a chard mess!
A sugguestion for Anniversary would be to have the room have more damage, at the very least a few broken consoles and beams.
What else to you think needs changing ascetically to give the game a better feel?