Corellia is another thing I want to see. Corellia and Garm Bel Iblis. Maybe Nathan Fillion could be involved in that episode. He'd have to play someone of considerably scoundrelish character though.
Dave Filoni has expressly stated how he doesn't want to see Han Solo in the Clone Wars. And I don't want Fillion's character to be a new, yet carbon copied version of Han. So perhaps . . . Han Solo's father???