Having Kevin Smith on board would be cool, but I think he wouldn't want to do some big action sequence. Could you see him directing (and co writing) an episode revolving around some big Imperial Senate debate? Smith is the king of dialogue and I think he'd need to do something with a limited setting like a Senate sort of scene.

Senator 1 - "The Empire cannot stand for this sort of rebellion! We must stop them!"
Senator 2 - "Yo! I know what you need! A fatty, boom-batty blunt! Yo!"

Sorry, just hadda.

Focus on my idea and not on my example.