MTHaslett said:
This movie would have rocked if we learned Vader lied, that Vader actually killed Luke's dad and that now Luke wants to hunt down and kill the old bastard. That would be a stronger way to see Luke turn away from the Dark Side. So as long as we're wishing, I wish for that. :-)
That would have been cool. Imagine Anakin appearing to Luke on Degobah instead of Ben and revealing the truth about Vader.