Ohh... I got frustrated back in the '90s trying to figure out what always felt 'off' about ROTJ. It's a bunch of little things, but I learned more and more about the real-world history of how the films came about. Then the Prequels happened, and my friends and I were up til dawn at Denny's discussing what worked and what didn't about TPM. Somewhere around there, one of my scriptwriting professors was telling us that the best way to learn the craft is to see what others have done, for good or ill -- especially that last part. If we're watching something, and something jars us out of the experience -- if you realize you've missed the last several seconds of whatever because you were in your head about what you just saw -- "Don't just sit there bitching about it. Get a copy of the script and see if you can do better."
So I did. Since, by then, I'd figured out there were supposed to be six Luke films, rather than three, I started with seeing how it would work to re-expand ROTJ back out to four films. Maybe even re-introduce Luke's sister. Then, after the Prequels, I started fiddling with what could have been had they been the six episodes George actually originally envisioned them being, before cutting the number down during pre-production on Empire. And making Obi-Wan the central protagonist. And preserving all the OT reveals.
By the time the Sequels came along, with all their attendant arguments and drama, I was several drafts in and, while reworking things after TFA, realized it worked better as three trilogies of trilogies -- 27 episodes. Each main hero has a beginning, middle, and end of their story, which is all part of the larger story. And, instead of being all over the place, timeline-wise, written by committee, contradicted and retconned all over the place, etc., I started at the beginning and went straight through to the end, preserving surprises for later, making complex villains who evolve over time, and presenting a coherent story that entertains on multiple levels and leaves one satisfied at the end. Wanting more, but content.
I've preserved as much from the extant canon as possible, reworked some elements "from a certain point of view", used elements from the old EU that worked, etc. I'm not trying to pretend I can do Star Wars better -- just wring what's there into something that makes more sense and isn't held together by misdirection and duck tape. The folks I asked to comment can say whether they think I'm on to something or not. *lol*