1) When the milenium falcon is leaving the Death Star docking bay, it has always bothered me that the cockpit shot before they leave has only a black background in the window of the falcon when I always thought there should be a wall of the docking bay instead. Have you changed anything in this shot?
2) There are a couple of shots in the Yavin hanger bay where 3po walks by during Luke's dialouge, but instead of hearing those electronic servo sounds that are associated with 3po there is that loud crackling noise made by his suit because they were using the on set dialouge. It would be nice to hear that crackling go if possible, and to hear the sounds usually associated with 3po inserted.
By the way, you should definately keep the battle of heroes music during the Obi-Wan and Vader duel. It worked well and I did not see it on the recent list of changes.