It was sort of implied at the end of 6 that Han and Leia would get together. They could include the original actors if they focused on their kids and the next generation. Luke could be married as well, and his kids would be involved, or Uncle Luke can train Leia’s kids like Ben Kenobi did.
I take it your not a huge Star Wars nerd like I am, as in the licensed books that have been published since the original trilogy, all of that actually happens! Good predictions!
All of that came to pass in the rich expanded universe bibliography of Lucas-approved literature over the past 20 years, beginning with the "Thrawn" trilogy. Han and Leia's children grew up to be Jedi but their son Jacen turned to the Dark Side and became Darth Caedus. He killed Luke's wife Mara Jade before his sister Jaina Solo kills him. Good stuff.
This. Against Thrawn.