I think I would actually focus on plot elements that actually seemed interesting.

Episode 1: Jedi actually doing something about the slavery problem on Tatooine. Making the Jedi mere patrol officers of the Republic doesn't give me any emotional investment when they are betrayed later in the series. It would have been awesome to see Jedi acting more like heroes instead of mall cops.

Episode 2: I think Episode 2 was the biggest waste as it had the most potential for an interesting story, and it was ignored. The plot of Episode 1 was a set-up for the podrace and then the lightsaber fight at the end. Episode 3 was Anakin's sociopathy on display and one mess of a movie. But Episode 2 had potential. The Sith, working behind the scenes, had orchestrated total control over two major governments in the galaxy and were pitting them against each other with the Jedi caught in the middle. The Jedi were put into a position where they were doomed to be ground-up in the gears of war. And that happened to the mysterious Sifo-Dyas? Even Jango Fett had connections to the cloners of the Republic and the Seperatist droid factories? That sounds suspicious to me, but the movie didn't do anything with that either.

Episode 3: Anakin and Obi-wan should have been the best of friends and Anakin's seduction of the dark sides power should have been heartbreaking. Instead, Anakin kills children and ultimately his wife who he was trying to save. Maybe even a small hint of the birth of the rebellion might have been nice here as well.