Maybe I need to be shown the light -- how do you account for the lying, Commander? What good did it do him to lie to Luke? I need to believe something big was gained by Obi Wan being so deceptive before I can be okay with this scene being in Episode IV. It works just fine in Star Wars, the stand alone movie as it was released and designed -- when it WASN'T a lie. But now it's a lie that, as far as I can figure, gets him exactly nowhere and sets Luke up for a terrible fall.
It was in Luke's best interest. He needs to focus on becoming a Jedi, not on his father not really being dead but instead the Emperor's right hand man and exterminator of the Jedi Knights. As Yoda said in RotJ, "Not ready for the burden were you." This is why I think a Yoda/Obi-Wan exchange establishing them keeping their lineage a secret from the children is essential. Of course Obi-Wan seems to not be sure what side to take: Does he ACTUALLY believe in his "truth" that Vader destroyed Anakin? Yoda says as much in RotS: "The boy you trained, gone he is. Consumed by Darth Vader." Or were he and Yoda just witholding the truth and devised that as a comfortable alternate to tell Luke until the time was right. I can't answer that, but I wish things had been a bit more clear in RotJ (which is why Lucas should release the deleted scenes!).
I'd like to beef up Han's story as well, CC. The main issue is that he is played as a second banana. He doesn't get to be a rogue, really. So he comes off as immasculated somewhat. I'd like to work in more skeptical and recognizable Han material and lose some of the beats that feel "off."
Well there's certainly enough Harrison Ford material out there to throw in some alternate dialogue here and there. I wouldn't want to cut too much of what's there already though; since going through the Carbonite ordeal Han is a changed man and would naturally behave to some extenet different than before.
De-aging OT: I think using Darth Editous' version of the OT will be a perfect compromise, as I had no problems with many of the SE additions and those I did take issue with DE has removed from his version. If there's anything inparticular someone has a problem with which is still in there we should definitely discuss it though. On a related note, I think we can all agree that the lightsabers in ANH require some serious re-rotoscoping for them to match the rest of the saga. ESB and RotJ to a lesser extent, but still some improvement is needed, most notably in colors and cores which were messed up in the DVDs.
MTH, good suggestions in regards to the Tatooine sequence. Obviously this section needs a lot of reworking. I especially like:
-Jabba takes delivery of Chewbacca (cut the obvious reveal of Lando -- use his later reveal with Leia)
-Leia takes Han out of the carbonite -- caught (cut down the over-the-top humor -- keep a more ESB tone)
-The droids get reassigned (cut the "torture" of other droids -- a truly stupid idea)
-Luke USES THE FORCE to bring door down on monster.
-Tell that fat bastard he'll get no such satisfaction from us!" -- that just doesn't sound like Han Solo. Han taking the threat silently sounds more correct to my ears. Cut that in favor of going directly to Luke's threat "This is your last chance!"
Eveything else (Han/Leia reuniting, Luke/Han banter, and SE line "It's okay I can see a lot better now!" (better than "Trust me!" IMO and humorous too) I have no problems with. Also I'm not too sure about moving the droids arrival to after Chewbacca and Leia arrive. There is potential there, but I don't know if it would flow correctly.
BUT, in ROTJ Vader's line could be changed to "Padme once thought as you do." Using the "Padme" from ROTS. She was the one who felt there was still good in him. She was the one who confronted him and told him he could come back with her. Ideally, he'd say "Your Mother", but since Vader never said that, I think Padme would work just as well.
Yes, excellent! This is on my short list of general changes to make to RotJ. "Padme" would be fine, but is there no way to replicate the Vader-Voice from other JEJ dialogue? This would open up a lot more oppoertunites, for the entire trilogy.
When Luke say's to Lando and Chewie may the force be with you over the comlink as they fly off to find Han, you could dub in Luke's line from ROTJ when he says to R2 'We're going to the Dagobah system. I have apromise to keep... to an old friend'. only this time he will be speaking the line to Lando over the comlink (might even be able to find some dialogue of Lando saying 'what about you?' or something like that
This is a good idea to use Luke's RotJ line and establish that he is indeed returning to Dagobah. So I like part 1 of your suggestion, but part 2 makes his visit feel just as contrived as the original: Showing up just as Yoda dies and not receving any further training. I really think my scenario of him training on Dagobah in between films is the best way to go as it addresses several plot points and makes sense of previously confusing situations (as a lay out in my earlier post).
We could eliminate the bit where he talks Lando into taking the Falcon. Just cut in like it's the end of a conversation, and he's giving reluctant permission to use the reliable freighter, on the condition "not a scratch." I always thought it was pretty poorly written that Han changes tune so drastically in that scene.
That could definitely work. 
