Below is the concept art his team drew up (and Nicholas Cage was the preferred superman among his team). Thank god he didn't get the green light on this after all.
http://www.iwatchstuff.com/images/20...n-superman.jpg
http://www.thehardmans.com/images/su.../superman2.jpg
http://www.iwatchstuff.com/2009/09/2...e-superman.jpg
http://www.jamescarsondesign.com/ima...rman/08_lg.jpg