Do you want to see OT and/or prequel trilogy characters return as older characters or force ghosts? Or do you want to see all EU characters (After ROTJ) in it? I don't know much about the EU but I think having Mara Jade Skywalker, Ben Skywalker, Anakin Solo, Jaina Solo and characters like that in it would make the most sense. I'd still like to see characters from the OT return, like Luke, Leia, Han, Chewbacca, Admiral Ackbar, R2-D2, C-3PO and Boba Fett return, but also have many new characters that the movie will be based around. I also think that there should be a new villain and not bring back Darth Sidious since apparently he somehow survived in the EU. I know that Hamill, Fisher and Ford are quite old now, but returning for a small role in the movie would be awesome.