For the moment, not even the closest observers or most dedicated fans are quite sure how the latest Star Wars trilogy is going to end. While it's likely that J.J. Abrams and Kathleen Kennedy themselves don't yet have a clear vision for Episode 9, we now know a little bit more about how George Lucas wanted things to go. And (surprise, surprise) it's pretty far from what we have now.
Speaking to IGN about the differences of approach taken by between J.J. Abrams and Rian Johnson concerning the character of Luke Skywalker, Hamill revealed:
"I happen to know that George didn't kill Luke until the end of [Episode] 9, after he trained Leia. Which is another thread that was never played upon [in The Last Jedi]."
While we had never heard that Lucas wanted to end the Skywalker trilogy with the title character's death, Hamill also confirms that the director wanted to explore Leia's skills with the Force. An element that is featured in the original Extended Universe, but never really embraced by Disney, the plot line was only vaguely explored during a controversial scene in The Last Jedi.
Hamill adds that he had seen a twelve-page document outlining Episodes 7-9 written by Lucas before Return of the Jedi had been penned. However, it seems that Lucas decided to incorporate many elements from the outline into Episode 6 instead –most notably the fact that Luke had a sister.
Before selling the rights of his saga to Disney, the director had, according to Hamill, wanted to make a new trilogy where his main characters would return, but the half-hearted success of the prequel trilogy somewhat dampened his ambition to embark on the venture. Up to now, it was thought that Lucas only wanted Luke to appear as a cameo at the end of the last film, but these new comments suggest otherwise.
In short, it looks like Disney is paying little attention to any version that Lucas had in mind. Speaking of the general differences in approach between Lucas and Disney, Hamill says:
"George had an overall arc – if he didn't have all the details, he had sort of an overall feel for where the [sequel trilogy was] going – but this one's more like a relay race. You run and hand the torch off to the next guy, he picks it up and goes. Ryan didn't write what happens in 9 – he was going to hand it off to, originally, Colin Trevorrow and now J.J. [...]
"It's an ever-evolving, living, breathing thing", he concludes, adding: "Whoever's onboard gets to play with the life-size action figures that we all are."