I guess I just don't see what else he could do at this point, he can't really be an action star at his age. I think it could be cool, depending on who they get to write it and whatnot. Plus, Stan Lee is involved, which is some silver lining. His voice is part of what makes him famous anyway, seems like a pretty obvious step in his career now that I think about it.
And knowing Hollywood, I'm sure this will get picked up by someone regardless of the quality...