I think the opposite. As even if George had made the Sequels back in the 80’s they would be vastly different to what Disney gave us.
Take into account two major bits:
“If the first trilogy is social and political and talks about how society evolves, Star Wars is more about personal growth and self realization, and the third deals with moral and philosophical problems… The sequel is about Jedi knighthood, justice, confrontation, and passing on what you have learned.”
A quote from George in the 80’s. He always viewed each trilogy as being different from the last but interconnected.
If the above quote is from the “Icons: Intimate Portraits” book, then it is worth mentioning that George Lucas only refers to the possibility of there being Sequels as a vague notion in his mind.
In a 1997 issue of the “Star Wars Insider”, Lucas said “[The whole story has] six episodes…If I ever went beyond that, it would be something that was made up. I really don’t have any notion other than ‘Gee, it would be interesting to do Luke Skywalker later on.’ It wouldn’t be part of the main story, but a sequel to this thing.”
In a 1999 interview with “Vanity Fair”, Lucas denied ever having any plans to make nine “Star Wars” movies. “When you see it in six parts, you’ll understand”, Lucas said at the time. “It really ends at part six.”
There are more similar quotes from George. It really can be difficult to take George’s words as fact at times.
Maybe, at best Lucas’ quote of "I really don’t have any notion other than “Gee, it would be interesting to do Luke Skywalker later on.’ It wouldn’t be part of the main story, but a sequel to this thing.” has been incorrectly misconstrued as being his outline for his Sequel Trilogy? Because in Lucas’ own words they are not part of the main story, but may be an idea for a possible sequel or continuation of Luke’s own personal story.
Well, it depends on when George was quoted as to what he said. Early on he was talking 9 films. Never an if about the last 3. The way Mark talked sounded like it was certain he was going to do 9. As he started planning the prequels, he stopped talking about the sequels. By the time he was done with ROTS, he wasn’t planning on doing the sequels any longer. Then as time wore on, he thought about it again. I’m not sure they ever would have gotten made if he hadn’t sold Lucasfilm to Disney. Sure he roughed out treatments, but I get the impression it was more to add value to the company than because he was planning on making them at that point.
Plus, if you read the early treatments and drafts of TESB and ROTJ, they are very different than what we got in the end. That is the nature of movie story telling. It morphs from the earliest ideas to the final product. You can even see that in Colin Trevorrow’s draft and the final TROS. The story follows the same structure, but details have changed drastically.
My above comments about the Whills are aimed at the treatment that George had done, but who knows what would have happened and how the story would have changed if he had decided to start production. We probably would still be waiting for the final installment since he liked to spend 3 years on each film. But based on what he was talking about and his past track record, I think he was headed in a direction that the fans wouldn’t have liked. The fans very much wanted a new trilogy similar to the first and better than the prequels, but with a fresh story. I think going too metaphysical would have lost them. I think Abrams could have started it better. Most of the complaints come from his setup in TFA. But with that I think we got two sequels worthy of the originals. And I think the complaints about what George might have done would make the complaints about TLJ and TROS look insigificant.