10. Have the central story be about Obi Wan.
9. Introduce Anakin as a teenager.
8. Remove all mention of midi-chlorians.
7. Remove the character of Jar Jar Binks.
6. Change Naboo to Alderaan.
5. Don't have C3P0 being built by Anakin.
4. End with the Death Star actually blowing up a planet.
3. Add young Grand Moff Tarkin as a character.
2. Keep Darth Maul alive to fight throughout the prequels.
1. Get rid of the Sith's "rule of two."