Fox blew any chance of sequels with AR, Alien 3 was the end, done, dusted. AR should have been introducing a new set of characters on a new line, and with the Gap in time, any chance of a sequel would be seen as , well just bull shit.
A prequel IS the way to go, I used to dream of old Obi-wan fighting on the side of a volcano against Darth Vader , just like I dream up what the hell that jockey was doing.
Leave him alone I say. Home world though? go for your life.