I am going to go out on a limb and say there is nothing i dislike about the oot, in terms of dialogue, pacing. storytelling, effects etc.

Any of the real cringe worthy lines were not in the final film, someone else actor or scriptwriter made the dialog better.

On Star Wars, Huyck/Katz rewrote 30% plus of the dialogue.

Empire written by Kasdan, then rewritten on set by Ford and Kersh.

While the story of Jedi is mostly Lucas if not for Kasdan and Marquand, Hamill and Fisher's input it would have been a disaster on the order of crystal skull or revenge of the sith.