I have an idea which I would LOVE to see:

As Rebirth started I REALLY hoped that they would use the NEW52 Superman as kind of basis for Conner.

I mean he was COOL, even though I prefer the classic Superman.
BUT!! he would be cool as basis for Conner:

NEW52 Superman had another haircut, which made him look younger etc. and would fit Conner as well.
NEW52 Superman was younger,not so muscular etc.

I often thougt that it would be cool just to replace Cape with Leather-Jacket and use it along the Classic Superman (Clark).

Superman Unchained had the best Superman Artwork which I have ever seen and also had some nice Storylines.