Well, I think if ANH is to be butchered then Chewie should have more facial expressions (not just his mouth closing/opening) and also it would be interesting for him to have a more masculine voice. Something more lion'ish perhaps.

And maybe in this scene on the right side there could be some kind of reactor or something. You know, like those glowing things in TPM in the Kenobi/Qui-Gon vs. Darth Maul fight?

I don't know, just put some sort of energy source there, so that it looks more futuristic and advanced.

Also in most of the scenes with R2 - he is moving very, very slowly. His head/wheels are so slow. Maybe his movements can be sped up a little. Not much, but just a little.

And in this scene - maybe there could be a ship flying by in the background? Just to give an impression that there's some other stuff going on.

Oh and what's up with those elevators? It takes almost forever for those doors to close -