The sound and video on this disc are very impressive. The 5.1 mix is the best I have ever heard, there is so much going on in each channel. Even Phantom Menace seems calm in comparison.
I remember watching the Ep IV SE for the first time, and being taken back by how much better the X-Wing scene at the end was with CGI. The movements and camera angles were so much more aggressive. I would very much like the originals to have CGI go in and re-do the action scenes. Can you imagine the Hoth battle from Ep V done with many many more CGI units? It now looks bland and tiny compared to the clone war sequence from Ep II. Also, Mos Eisley looks empty compared to the full-of-life Mos Espa from Phantom Menace. Everyone in Ep IV is human just about, whereas with the new ones, there is a vibrant mix of aliens. Alot of spicing up of the enviroment would go a long way to making the originals better without even touching the storyline.