Batman and the Outsiders Vs. Darth Vader

Darth Vader's character arc seemed to come to an end with his redemption and death in Return of the Jedi, so I assume that Star Wars: Episode VII will feature all-new villains.  Vader will be missed though, he has such a great look and presence onscreen.  I suppose another character could take up the mantle, but that could really misfire if not done carefully.