My cutlist would go something like this:

get rid of the first jealous Han scene, then trim the second one (“He wasn’t I can feel it” Han looks confused “He’s my brother.”)
dump a bunch of 3PO’s “captain obvious” lines
tone down Ewok cutesiness
give Boba Fett a better death scene, or just cut/roto him out of the movie
cut the music number - we go straight from the dungeon to the reveal of Boushh and Chewie
the stuff SSWR suggested with the Endor arrival
beakless Sarlacc (the beak just screams '90s CGI)
maybe restore the lightsaber-building deleted scene
do some reorganizing of the battle scenes
end at the pyre scene, with Luke seeing Anakin’s spirit (mixing ROTS and other Hayden roles for the desired footage - or Shaw, really depends on TROS edits)

The most important cut for me, IMO:

get rid of the crying Rancor keeper - I’ve hated it since I first watched the movie and would be happy to see it gone