Are they really going to rehash Tower of Babel? Are they just going to end up using the New 52 label just as an excuse to retell old stories?
I don't see a valid reason why Superman and Wonder Woman can't have a relationship outside of the team or their secret identities. I don't think much of the actual relationship. It's more of a publishing gimmick. Public or not, you're basically telling them they can't live a life because of what other people may think about it. Lest we remember, they are all vigilantes to begin with.
@Jekylhyde14: It is a betrayal of the character of the individual. I am not saying it is impossible, but they come at what they do from completely different angles. Superman feels that based on his raising that what he does is for the best. Wonder Woman is a want-to-be pacifist who is forced into doing stuff she doesn't want to do. That is why I say that it is a betrayal of her character. In this case Wonder Woman is the expected head cheerleader that dates the quarterback, when in fact she would probably choose the leader of the debate society or the Friends of the Environment club.