You can have some dark elements to the film without making the character dark. I would definitely want a much more family friendly film than some of the recent efforts. When I saw Superman returns, my wife and I were hoping for children and we sat in front of a father and his son who was maybe four or five. The kid giggled and squealed every time Supes came on the screen and spent the whole time asking his dad questions about how many people Superman can help, not how many he can punch.
Now that I am the proud father of films, I would love to have a decent film that wouldn't give my kids nightmares if I took them to see it.