...come up with some ideas of how you would have wanted the prequels to go or some cool thing you wanted to see....
1. Vader and the Emperor hunt down the Jedi Knights with the help of Boba Fett and a host of Mandalorian Warriors.
2. The Kyber Crystal was referenced in some early drafts of SW and then in the Splinter Of The Mind's Eye novel. Would have been cool if this thing would have made an appearence and played some kind of part in the plot of the prequels.
3. General Kenobi and General Skywalker leading armies in the Clone Wars.
4. Have one of the main characters be an Ithorian (Hammerhead for the uninitiated).
Feel free to contribute....