Why do you guys think Cena should turn now?
It's the only thing he's got left to keep his character viable, but I don't know if he's got it in him. He couldn't go back to the rapper gimmick, having a go at whatever town he's in. He's gotta go serious with it, go down the 'Hustle, Loyalty and Respect got me nowhere...' road. And that's where I'm unsure. When he tries serious, he ends up looking like he's trying too hard, squeezing out a pose and making his massive jaw look even bigger...
His best mic work is when he's able to have a bit of fun, enjoy what he's doing. To turn heel, he needs to make people believe he's a tough SOB, but we've never seen him attempt anything like that.