:-o
I don't see that happening, even if he never had that accident, he would be to old for the role. I see what your saying though, but no, someone real please!
They had the right idea with the new Spiderman, very well done. They just need to do Superman on a bigger scale :-)
Not knowing exactly what time period in his life it will be set, i hazard a guess it wouldnt be that old..so they will get some young blood in.
Those special FX you mention sound costly, they would probably want to devote that budget to the actual action.