It would be cool to see characters like Zatanna, as long as she's not based off her New 52/Justice LEague dark version. Have her appear as a cool stage magician with real powers, not a goth dressing former love interest of Constantine. I don't see them using her or more superhero-y characters, though. I bet even Fate's helmet will just be an artifact. Still, it would be cool to see them use some of DC Comic's cool mystical characters.