As pleased as I am with Man of Steel, Superman brawling with bad guys has always seemed crude to me. This has long been his m.o. in comics and cartoons. In Warner Bros. Animation's 2001 Justice League cartoon, Superman was deliberately powered down so he would need his super friends' help.
My Clark Kent/Superman would have traveled the world, gaining insight into every culture and himself. He would be aware of how powerful he was, of how much damage he were capable of, and would be firmly against aggression. His instinct, like a Jedi's, would be to defend, not to attack. He would not punch, but would slip, block, and use submission holds. Not adding to villains' violence, he would not cause as much collateral damage.
He would be a rescuer and would use his power to nullify villains' power such that, when Superman arrived, they might simply give up.
I know. It would probably never sell. But I'll keep dreaming.