Wookie Wedgie, I'm not so sure about Qui-Gon not getting killed until Episode III. It had always been implicit that it was only Anakin and Obi by the time the lava pit duel rolled around.

Oh no, absolutely not, no. If I made a change like that, I'd make a whole bunch of other changes, too. I woulda had Obi-Wan the one finding Anakin, not Qui-Gon. Qui-Gon wouldn't be Obi-Wan's teacher, it'd be Yoda like he said in ESB. But, I would make Qui-Gon, or a character like Qui-Gon one of Anakin's first victims when he's revealed to be the betrayer of the Jedi. Maybe Qui-Gon figures it out and Anakin slays him. Qui-Gon, was a close friend of Obi-Wan's, and Obi-Wan's wants to take vengeance on the one who killed his friend. He's, of course, shocked to discover it's his own student...