This is probably an unpopular opinion now. Return of the Jedi is way better than people think it is and most of their complaints are illegitimate. The Jabba sequence introduces Luke as an almost-complete Jedi, redeems Lando, and rescues Han, simultaneously resolving things that happened during the previous two movies and setting up the rest of this movie. The “pacing issues” of Endor are not really issues at all. No one complains about the early scenes of C3PO and R2D2 wandering around in the desert and getting captured by jawas in the original Star Wars, even though those scenes are even slower, because it just isn’t a problem unless you’re used to the cracked out modern editing of current movies.
The ewoks are fine and also not that different from jawas or ugnaughts. They show the Empire’s hubris, overlooking things they consider small or insignificant. They serve mainly as a distraction to pull the imperial troops into the forest away from the bunker, and the battle is only won because Han, Leia, and Chewie are crack shots and they have elite rebel troops to hold the bunker. If there’s one change I would make, it would be to just add more shots of the rebel soldiers doing more of the fighting.
The second death star is fine and the insanely good space battle and throne room scenes (both still never topped after 40 years of trying) wouldn’t be the same without it.
Leia being Luke’s sister is awkward but… so what? It’s funny and it’s a meme, but that’s it.
I understand that people love to complain because I also love to complain, but every time it comes up the Return of the Jedi criticisms are just unnecessarily cynical for no reason.