Don't seem to have ever actually posted here. Film-by-film:

Star Wars:
-Cleaned matte lines, if there were any.
-The 2004 Krayt Dragon call. Perhaps not as intimidating, but it seems more original to me. Can't remember where but I am pretty sure I hear that other sound somewhere else in the film.
-I could live with the way Adywan edited the Mos Eisley introduction, even if I prefer the original. So I guess this counts.

ESB:
-The new shot of the Slave I following the Falcon. That's actually a fair improvement.
-Again, any matte fixes. The ones on Hoth aren't done too well, but they're there. Good concept.

ROTJ:
-The new Oola scenes. Too bad they came with Jedi Rocks.
-As was said earlier, the inclusion of Luke hugging Wedge.
-Any and all matte shot improvements.