Re: What If Geoff Johns Wrote MOS?
Geoff Johns should've been a screenwriter for the SR sequel. He could have managed to bring the Neo-Silver Age quality/details to the film that would have been appropriate to the continuity.
For Snyder/Nolan's MAN OF STEEL? I'm not so sure. Perhaps he should just be consulted as opposed to be a writer on it. Let this be a new take on the classic character.