Agreed about Ryback. Cena's already half-hated anyway, so you don't go heel unless it's against a full fledged good guy. Cena is a funny guy though, you gotta give that to him, when he was doing his dance moves and asked if anyone wanted to see a little 'heel turn'. Then he started cha-cha'ing to Fandango's music because the crowd wouldn't stop humming it for like 3 matches lol.
One angle I did like was Hell No coming out to protect Taker. Kane & Taker together again is cool, and I like what they've done with Daniel Bryan a lot.