Some interesting pointers about some of the original ideas for RotJ - along with quite a bit more on the politics and feuding going on:
Not sure why there's an undercurrent of being a downer on the final released film, though - IMO Return of the Jedi was never lacking as a film, it had a wonderful climax, and the space battle remains the best ever put to film to this day. However, at least we get an explanation for the "sister" issue. Oh, and I didn't realize Lucas had managed to keep all the rights!
Not sure why there's an undercurrent of being a downer on the final released film, though - IMO Return of the Jedi was never lacking as a film, it had a wonderful climax, and the space battle remains the best ever put to film to this day. However, at least we get an explanation for the "sister" issue. Oh, and I didn't realize Lucas had managed to keep all the rights!