In the movie, Padme is thrown from the LAAT/i when a shell from a flack gun explodes outside. In my AU, fragments from the shell kill her. This will change the story line significantly, because Anakin won't fall to the dark side because of his fear of losing her. The war will drag on for years and years.
As Mace Windu walks into the main hall of the Jedi Temple, he calls for all Jedi Knights to come to him. He says that Master Obi-Wan Kenobi has been captured on Geonisis and he needs volunteers to rescue him. The battle ahead will be dangerous, and not all will survive. The council has called, now who will answer?