I would argue that the only vision Lucas has really had for Star Wars since 1980 or so is how many unique-looking characters he can cram into each movie to sell toys of, since merchandising was always where he made most of his money.
It's part of why so many newer characters are so underdeveloped and pointless - 1970s Lucas was actually trying to tell a story (even if 90% of his ideas for it were stolen from other movies and TV shows he'd seen before), but post-success Lucas was basically far more concerned about look and appeal than minor things like characterization and likeable personalities.
It probably also ties in to why he spends most of his time worrying about CGI sequences and how things look than he does whether or not those things actually make sense or matter in the larger scheme of things. After all, the depth of Padme's character doesn't sell toys, but the fact that she wears 17 different outfits in a single movie means you can make 17 different figures! And it's way more important to shove dozens of characters into minor background cameos than it is to focus on a few major characters and develop them.
For all his talk about Star Wars being his baby or how he had a grand vision for it, he's just bullshitting like he's done in every interview for the last 40 years. Too many people spent too many years telling him how much a genius he was, and he stared believing it. So now he goes out of his way to play up to that idea when talking about something he cared about once in the mid-1970s, and which has been a merchandising machine for him ever since.
(It is kind of telling that so many ideas he had for the prequels - as well as his proposed ideas for what he would have done with the sequels - were ideas that were in his original script for Star Wars, but which were cut out because everyone he showed them to told him they were terrible. He's just recyling old shit because he doesn't really care enough to really think about it anymore (and because he's now deluded himself into believing he's a genius, so all of his ideas are clearly the best ideas, no matter what other award-winning director friends told him in the 1970s). This is also why it took him years to write the scripts for the first movie, but by the time of the prequels, he'd basically write the scripts in about a week. It's easy to write fast when you don't really give a shit about what you're writing, and are just referencing stuff you came up with 25 years ago anyway.
(Incidentally, rampant ego and self-delusion is also why he badgered everyone involved in Indiana Jones and the Kingdom of the Crystal Skull to go with his idea of magic aliens in spite of the fact that literally everyone else involved thought it was a terrible idea. Because George Lucas the Supergenius is clearly incapable of having bad ideas, so he just threw tantrums until everyone else gave up and let him do it just to shut him up.)
The Sequels under Disney certainly could have been better than they are, but sequels from Lucas probably would have been even worse.
I like how everything you post is an opinion yet claim it as fact. ---