After seeing R1 for a 2nd time and watching many other Star Wars stuff I think the main reason I like it is that it has very little George Lucas involvement. Lucas thinks bug, and has great imagination, but he has a hard time calling the shots. I think many of Star Wars fans gave him a pass in ROJ and PM (at first) because the duels were awesome, but we really should have known that the Ewoks and the Special Editions were just the beginning. Lucas even managed to make me hope Harrison ford is too old for another Indiana Jones.
Also it should be noted that there are far better interpretations of characters in cannoned media than what lucas gave us with the prequels.
Just imagine if we got this General Grievous
instead of this one
There are tons of other examples from Darth Maul getting a better run on Clone Wars and Rebels to making the Clone Wars feel more meaningful. I think the prequels would have done better if we started with the Clone Wars beginning and Anakin emerging during them instead of the forced romance and etc.