I gotta agree that ROTJ has by far the worst changes. To make the SE of the original at least watchable all you really gotta do is splice out a few frames to make Han shoot first. Yeah, the Mos Eisley stuff and CGI Jabba is pretty bad, but they pale in comparison to “Jedi Rocks.” And Empire isn’t really harmed at all by the changes. I certainly don’t think any of them help or were at all necessary (the original is a perfect film as it is), but the worst is changing the line “Bring my shuttle.” Hardly Earth shattering. For the most part the changes were neutral. Had no positive or negative impact on the film. If only those types of changes were made to the other two as well, I wouldn’t complain too much.
The SE of Jedi, on the other hand, is totally unwatchable. “Jedi Rocks” is one of the worst things I have ever seen, without exaggeration. Absolute cringe. I have no idea what Lucas was smoking, but I hope I never inhale any of it. The Little Sarlaac of Horrors is terrible too, and don’t even get me started on the “Noooooooo” and Hayden Christensen with his creepy ghost smirk. What little was left of Vader’s dignity from the prequels was robbed by those changes.
Luke saying “You’re lucky you got outta there” rather than “You’re lucky you don’t taste very good”, Boba Fett’s Jango voice over, and the new Emperor footage and dialogue, are other showstoppers in Empire… Not to mention the out-of-place CGI background distractions in Cloud City.