I can see John Cena winning it and cashing it in for a Wrestlemania rematch! Hopefully CM punk gets his rematch and we see a 3 way dance
there is Royal Rumble or Elimination Chamber (more likely he wins this) for Cena to win. They should stay away from triple threat BS (yet another one with Cena/Punk *yawn*), either do Rock/Cena II or Rock/Punk II and whoever is odd man out can get another high profile match.
Worst Case Scenario: Cena cashes in the briefcase on The Rock or Punk after the match at the Rumble, wins the title, The Shield cry "INJUSTICE" and are then fed to Cena, causing everybody's heads to explode