Anything made by George Lucas 1990s and beyond would have been a terrible movie. He did his best to ruin Return of the Jedi, and spent most of the 1980s making the terrible Ewoks and Droids TV shows and cartoons.
The man had a lot of positive attributes as a filmmaker, and when working in collaboration with others who brought their own skill sets and talents to the production, he was able to make a few brilliant films. Once he gained the power and money to do whatever he wanted, his limitations went on full display.