-- "Obi Wan once thought as you do" definitely needs to be addressed -- in ANH. THAT is an important and missing beat for the "saga." It's unnatural for Obi Wan to fight Vader and not reach out to Anakin. There are definitely ways to get that dialogue in -- Obi Wan reaches out with his feelings -- "Anakin" (stolen from ROTJ echoed dialogue -- no lip synch problems) and some version of "That name means nothing to me" from Vader. The problem with using "Padme" to address this issue is that it dodges the real issue -- Obi Wan is facing Anakin in ANH, yet he never really addresses Anakin. Further, saying "Padme" to Luke has no meaning. Luke never ever heard Padme's name. It wouldn't work.
--I love "I hae a promise to keep... to an old friend" at the end of ESB. But the training has to be longer and come in ROTJ as CC suggests -- IMHO.
-- If Luke knew Vader was his father, his willingness to fight him in ESB would come from the fact that he believes his father is evil. But he sense more than that as Vader reaches out to him in their duel -- thus, Yoda's instruction to "face Vader" means more than "kill Vader." It means, as Luke divines, challenge Vader to return from the dark side.
-- I wish we could kill Lando/The Falcon. Definitely we must address this issue.
-- As to the Jabba sequence in ROTJ
I agree with the DH that some Han banter must always remain. But they wrote him as a comedian, every line is another joke (usually a lame one). It undermines the tension too much. The "now I see a light blur" line is fine, but "I grew up here/You're gonna die here" is unnatural and unfunny. Han knows Tatooine, Luke knows Han knows. It's just bad exposition -- "Don't forget, I came from Tatooine in Episode IV."
The idea that Han is "changed" by being frozen doesn't wash for me. Why would he be changed? He didn't experience anything while being frozen. It wasn't especially hard on him. He should have come out half-expecting to still be on Bespin. No change required, expected, or helpful to the story. His "change" as such might come when he tells Leia "I love you" on Endor.
I like some of the DH re-shuffle of my outline. I strenuously disagree with CC that the original order of the Jabba sequence flows best. It doesn't flow at all for me. It is so illogical that I can only shake my head at it. But if Chewie and Leia are captured and Han is thrown in with Chewie -- and we drop the reference that Luke is coming to save them -- then it becomes a real down beat, a real place of dramatic tension and a true continuation of ESB. Having all this before the droids walk up to the palace makes their walk much much better because now we know they're walking into real trouble. Of course we'll have to edit their dialogue, but the tension can be real now instead of being generated by the "stories I could tell you about this place."
There is a need for a sense of doom and danger to this sequence. Jabba should really feel scary. As it flows now, he seems like a joke.
I'd want to cut out almost every shot of his cackling little pet, reduce the shots of Green Pig guards by 1/2, eliminate all but one blue-elephant shots, and emphasize Jabba's ruthless and merciless nature.
Then, when Luke marches in -- we really wonder how he's going to pull it off. Then, when he does, we realize it was improvized because he's basically saving his over-eager friends who risked their lives to help Han too soon. They should have waited.
This re-ordering makes the plan better and makes Luke better.