THAT would be more realistic, but I think superhero fans wouldn't have the patience for any of that (I wouldn't mind it though). I'm partial to systematized magic because I want to know how it works, what are its limitations, where does it come from, etc. I find it easier for readers AND viewers to suspend their disbelief if the magic, quite simply, makes sense. But I also like the wonder, mystery and confusion of magic as well. I guess I'm a pretty big hypocrite on these matters. I like grounded, realistic stories and characters, but I also really enjoy weird and fantastical tales and people too.