My personal is that Palpatine was an integral character in the first six movies. I align myself to GL in that these movies can be seen as the tragedy of Anakin Skywalker. Anakin's fall and redemption story was complete in the Emperor's death. I think Palpatine was a great baddie, but I also think one of the main attractions of Star Wars for me is that it's such an expansive universe, and it has such an amazing ability to trigger my imagination with all it's different worlds, species of alien, characters both shown, or mentioned. Why keep going back over the same ground, run the risk of jumping the shark, just to appease a few fanboys?