George Lucas has answered in interviews what his plan for the sequels had been. Here's one source: https://arstechnica.com/gaming/2018/06/george-lucas-reveals-

George Lucas has answered in interviews what his plan for the sequels had been. Here's one source: https://arstechnica.com/gaming/2018/06/george-lucas-reveals-his-plan-for-star-wars-7-through-9-and-it-was-awful/ https://arstechnica.com/gaming/2018/06/george-lucas-reveals-... That link editorializes in its URL that the plan was awful, but you can read it yourself. (I felt it pretty easy to speculate that its quality might not be great in reading George Lucas' book adaptation of A New Hope, personally, and guessed at some of the answers he later gave in interviews. Though it would have been a fun spectacle/drug trip.)