Darth Maul is one possible spin off.
Well it couldn't be worse than the empty black suit he was in TPM... he epitomizes everything that was awful about the PT.
"Oooh, he has a red saber, he's a bad guy." End of character development.
I thought Darth Maul was the only good thing to come OUT of the prequels myself.
Screw character development-- he was dark and scary and straight-up evil like the best of the OT villains, and he commanded the screen in a way no other character in the prequels did.