I just had a thought. All the fanfic prequel rewrites seem to follow the format of Obi-Wan meeting and training Anakin. How about a version in which Obi-Wan and Anakin are already friends and Jedi as the movie begins, and the history of how they met, etc, is explained in dialogue/banter? That leaves lot's of screen time for Anakin's fall and the evnts of the clone wars, etc.