Cap, this was one of the best explanations of ROTJ failures, thank you for that. "This is not Han Solo" was Kershner's sentence as well, after Ford said "I love you too" in the Bespin carbon chamber. So it was changed to "I know".
Obviously Marquand was not that kind of director. I've seen "The eye of the Needle" and it had too much overblown drama in details so every idiot could understand it as well.
Reading your post I just tried to think, well how can anybody fix this big issues? They are not cosmetics any more. And Ady said that "Jedi is going to be a mess". It really is, but I hope...still...
I saw Jedi first when I was 14. Then I was annoyed with Ewoks. Later I noticed that actors are talking to each other like they are in the middle of a big american city having ordinary day there, exept they wear strange wardrobe.
Why did this happen on Jedi and didn't on Empire? Was Marquand taking it all too lightly?
Why is the movie looking like "OK, everybody! I know the last one was seriously dramatic but now let's have some great fun! Hahaha! War can be really fun! Everybody shoots, but nobody dies because it's ... the fun show and y'know, it's only a movie! Hahaha"
And I would really like to read any kind of statement of Ady regarding this problems, if a great man is not too busy...
Greets to everyone here