I think WWE should expand on Edge's 'Rated-R' gimmick. They should make him become rebellious against the entire company and flagship show, "Monday Night Raw" for being 'TV-PG' and downgrade the fans for being mostly "kids"and not being 'grown' or 'mature' enough to attend the show . And feud with all the Superstars who supports it or seems to be the key figure of the rating. I know John Cena might come to mind but there can be more. He basically does the opposite of everything the PG rating does not allow, but not too much. It would really help if he forms a sort of stable based around the 'Rated-R' image and of course himself. He should at least have another valet, Alicia or Maryse. Basically the goal of him and his alliance is to capture the WWE Championship or any other title and change the entire show to 'Rated R' and then make a new key figure and represenative of the new image of the company. It will be, of course, The Rated-R Superstar himself.
Of course, he probably won't succeed, but it would be something interesting. Similar to Cm Punk's Straight Edge Society actually.