I finally finished working out the territories for each member of the Sith Supremacy. I've also been coming up with official Star Wars: Saga Edition RPG stats for them that have been getting good responces on the WotC boards. So far I only have Darth Grimm and Darth Kage done but I've started on Darth Tacitus.
As it often does, hammering things out like this tends to give me ideas for additional details to backgrounds and the like. I was able to think up some really fun stuff which I'm looking forward to incorporating.