I'm sure Browned Wind will be back, orange in-tact. Andy probably has one of Sean's statement necklaces gently swinging from his bed-post as we speak.
Tamra and Shannon will be back I'm sure, Andy called them "All-Stars". I am also sure Victoria is gone after her antics at the reunion. She'll probably be at a couple of Tamnon's events like how Jeana used to pop up.
Gina does have a storyline going into next season, possibly more-so than Emily, and I'm actually fine with both of them staying. Maybe we'll just get one new Housewife and MKE as Friend.