There was a time when novels were the only thing we had when it came to life after Return of the Jedi for our beloved characters. It started with the Timothy Zahn trilogy and went all the way to a large collaborative saga of the Yuuzhan Vong invasion and beyond. It was actually a well planned and cohesive series of stories that took Star Wars in some exciting new directions. Those stories have all been banished from being canon now, and are part of the Legends series. Why couldn’t there someday be a Legend series based on the stories George Lucas had planned for the Sequel Trilogy?
If these books were written, fans would line up all over the world to buy them. Whether they loved or hated Disney’s versions of the Sequel Trilogy, fans would still be very curious how George Lucas’ version would’ve gone. Getting it in book form would definitely satisfy their curiosity. This would be something that obviously George Lucas would have to want to do, and he could feel so scorned by Disney that’d he’d never agree to it. He’d also most likely have to hire an actual author to flesh out his story, so even with Lucas’ name on it, chances are someone else would have input on the stories and lines our beloved characters speak.
A series of novels is one of the more likely ways Lucas’ version of the Sequels could come about. There wouldn’t need to be any production costs, they wouldn’t have to hire any actors of any kind, and of course, all the special effects would take place in the readers’ minds. Maybe after some smoke has cleared on the Disney trilogy, serious thought about making a trilogy of novels based on Lucas’ original plans could actually happen.