To absolutely no one's surprise, I agree with Superlad. Hickman could be amazing on Superman. Hell, he's writing one of the best Superman stories I've seen in a while right now with Hyperion in Avengers, and the Sun God from that New Avengers arc was pure, undiluted Superman greatness.
I'd dance down the streets screaming for joy if DC announced he was coming over to the "S" books. Especially if he were replacing Johns or Soule and Pak was staying on.
Granted, hes not a perfect writer and sometimes his plots get in the way of character. But I think Superman is a character where everything would line up really well. Is anyone reading his Avengers? Because to me that feels an awful lot like a Justice League story he never got to tell. Which would explain why the "character" has been pushed back at times; the story originally wasnt for Tony and Steve, it was for Clark and Bruce.