Fixing the Landspeeder shot which i also agree with Lucas on, but none of the other changes. Beyond restoring the sound and picture. Or removing garbage mattes or matte lines.

I think they went too far with some of the re-composited effects. And i dislike that they zoomed in the picture in Empire Strikes Back on the Millennium Falcon. Fixing the disappearing Snow Speeder was fine though. The transparency was always horrible.

Or when they fixed the shot of Luke swinging at Palpatine in Return of the Jedi that also was a good change. Misaligned rotoscope on lightsabers is forgivable because it is not revisionist imho.