Well, yes and no. The speeders are transparent intentionally to overcome the common problem of black lines surrounding matte work. They should have been able to re-matte it digitally. This was probably hidden by the film-to-film copy and brought out in film-to-video. It doesn't make it less worthy of fixing. The Emperor's blobs are obviously totally a gamma problem, but should have been fixed digitally, too.

And while I agree that most of the stuff added to or changed in the trilogy should be expunged, Lucas is so far removed from the real world, blocked from it by yesmen, that I don't think that he has any interest in hearing any criticism, if he could hear it at all. (On the other hand, the RotJ edits largely made it better.)