While I'd agree that the "PT-continuity" changes aren't the worst of the changes to the OT, I don't think they are "neutral" except for the PT baggage you bring along with them.

For example, I don't remember much of the PT. I've seen all three movies, certainly, but I think I remember an annoying giant lizard in AOTC and that's about it. I wouldn't know an element from these movies if it came up and bit me. I'm sorry, I just don't remember them enough to hate them properly.

So when Vader's eyebrows disappeared in the OT, my thought was: where the hell are his eyebrows?, not that this was a forced-continuity decision. All those other planets celebrating in ROTJ, who are they and why do they matter?

That's not to say these are terrible changes on the order of CGI Jabba or Mos Eisley dinosaurs, but these are the sort of changes that make me say WTF is this about while watching the movie, and that's certainly not neutral. They do degrade the OT, even if just a little.