Just speculating, does anyone else here think that Gwendoline Christie's character would make a great android? Think of Xizor's assassin droid, Guri, from the book Shadows of the Empire. She has an imposing frame to play a kickass human-like android.

Edit: @towne32, Honestly, I actually hope Luke doesn't die in VII. One doesn't have to die to "pass on the torch" to another main cast - it's becoming cliché in Star Wars. As iconic as he is, I'd like to see more of Luke as a powerful, full-fledged Jedi Master - even when his role becomes just as a supporting character after VII (just like Yoda's role in V) - seen only when integral for the story. I give him permission to die in IX if he has to :) Han on the other hand, yes it's likely he will die in some way in VII, or at the latest VIII. I trust them to do with each character what they need to do to tell a great Sequel Trilogy.