Hmmmm. Interesting. I don't necessarily picture Superman as Dean Cain. I do, however, think he must be dark-haired and relatively muscular and tall. If he's blond, red-haired, freckled, short, fat or thin, then I guess I don't really think that he is Superman.
By the way, I think Jimmy should be red-haired and freckled. Lana should be red-haired too, but without freckles. Lois should be dark-haired, Lucy should be light blond, and the same goes for Cat Grant. And why? Well, isn't it obvious? Because they looked like that in the comics.
Ann