Let me put my opinion into the topic. I think everyone's ideas are very good and creative but can we really rely on WWE making this actually unpredictable. NO they have dropped the ball many a times in this new ERA. But seriously when Undertaker became the American Badass/ Deadman Inc., he was really good and fresh to watch. It was something different, it just wasn't the deadman that we have known throughout his career. So I think a Cena heel turn would be good for him because its different and fresh.