Suggestions:
Jedi (9 council member spots open)
Senate members (24 senators / 1 supreme chancellor (ruler of Coruscant))
1 King OR Queen for Naboo (aboveground city)
1 King OR Queen for Naboo (underwater city)
1 ruler for Tatooine (kinda like Jaba the Hutt Position)
1 ruler for Endor
1 commander for the Death Star
Sith Lords (8 spots open)
Pilots
Wookies
Jawas
Ewoks
Droids
any sort of other alien creature of sorts