If the question is really who I'd most like to write, I'd have to go with Superman/Clark Kent. Sure, he's been around forever, but I've always related best to the strange visitor believing in the core values of his new home such that he'd want to live the American Dream himself.
My single- or six-issue run would have Clark either powerless or unable to change into the Superman outfit—lost at Metro Dry Cleaners?!!—because I like the idea of Clark working in secret, doing what he can without the swooping gesture that gathers a crowd. The storyline might be that Clark has sworn not to don the tights and cape in an effort to show Lois they can have some semblance of a "normal" relationship together. And yet, do-gooder that he is, he can't resist helping people where he can.
My story arc might be a lot like the first season of Lois & Clark. Dean Cain turns 42 today. He recently guest-starred on Smallville as an immortal Vandal Savage-type villain, and his voice was blatantly, artificially pitched down.