What is the “Kurtz version?
Gary Kurtz, co-producer of Star Wars and TESB, wanted ROTJ to end on a bittersweet, poignant tone. Were Lucas not to have intervened and changed the story to be more fun and have a happy ending, among other things Han Solo would have died a sacrificial death for his friends (and completed his character arc from a selfish scoundrel to a loyal hero), there would have been no second Death Star, and also no Ewok Celebration (or “teddy bear picnic” as Harrison Ford put it).