Hello there!
I haven't read all 125 pages of this thread but I want to just make a couple of suggestions....that may be already taken into account.
1: IMPORTANT!: Someone posted in the original suggestions list that the Star Destroyer should be shown arriving in Bespin. DO NOT DO THIS unless it is AFTER the reveal of Vader at the dinner. Might sound a bit of a no-brainer, and teaching you to suck Lucas's grandmothers eggs, but I felt it quite strongly to make the point!
2: Revised Hoth base explosion. You might be doing this already.
3: EXECUTOR: When the Emperor is talking to Vader, maybe have a cut to Palpatine's office on Coruscant (if that's where he indeed is), with a little holo of Vader kneeling, and Vader's voice distorted a la holo transmissions.
4: Make the Space Slug look like less of a sock puppet! "I never a get a spaceship, never, i never get annyfing..."
5: BESPIN: Maybe change the R2 smoke screen to the Napalm he uses in ROTS. Just a thought...
6: ROTS music (Anakin Sith Eyes on Mustafar - DANN.....DANN....DANN..DAAAAAN, you might know what I mean!) when Vader reveals who he is. Oh, good one would be to make Luke's fall look a bit more like he's trying to commit suicide rather than just "Hey, jumping down this bottomless pit is a really good idea coz I'll be sucked into a garbage chute. I've only just begun my Jedi training but I just know I'll be alright!" and Vader's slightly lame reaction...almost looks like he's going "Oh FFS..."....maybe Luke should close his eyes a la Ben Kenobi on DS1, and Vader should reach a bit more or kneel on the deck, uselessly trying to catch him. Different POV.
7: END: The last shot of them looking out the window towards the galaxy, has always grated me. To be able to view a galaxy at that scale and detail you would have to be THOUSANDS of LIGHT YEARS away. Maybe that's the point, but then you see the whole fleet turn and disappear as the credits fade in....but they're turning away from the galaxy, and its not even in sight! Are they heading for the EU!?!? I dont really know what to suggest, as space is big. Really big. You just won't believe how vastly, hugely, mind- bogglingly big it is, etc.
To be honest I cant believe I'm even thinking about changes to the greatest SW, even Sci-fi, film. But, if somebody as talented as you is doing it, I'm fairly unworried!
As an aside, are you a disgruntled ILM employee? This is far better than walking into the office with an Uzi!
EDIT: OK I spent the last couple of hours scanning this thread, all kudos on your decision on the music. And someone already said almost word-for-word what I said about the slug muppet!