I would rather not see him back, especially with the announcement as half-assed as it was, and ESPECIALLY without him getting in the middle of a Ricardo/ADR feud. Curse you, WWE, that would have been gold.
Still, there's some interesting things to consider here.
-If Ricardo screws over Cena to go back with Del Rio, maybe 20% of the audience will give a shit about ADR... maybe
-If Sandow cashes in on Cena, that could be a fantastic feud if done right
-If ADR wins clean... that's not happening
-If Cena wins clean... Seeing that Cena's been built up so much that he's untouchable, him winning a mid-card belt would be pretty different for him. Lord knows something different with Cena is fine and dandy at this point.