SilverWook said:

If there's a logical reason for an OT character to appear, I'm all for it. It's just natural to wonder how our old friends ended up after all these years. I can even survive Anakin's ghost showing up, if it's important to the plot.

We probably could all agree on which character we don't want to see return though? ;)

Actually, I was going to say Hayden's Anakin (IMO, even more devastating to the PT's integrity than Jar-Jar, Kung Fu Yoda, and the Neimodians combined).