Yeah I don't get why they're trying to do such a dark take on heroes like Superman and Wonder Woman. They're not supposed to be dark.
Green Arrow is a potentially very interesting character but it all depends on what they do with him. I can't imagine a cynical take on him working, since the character himself is so idealistic. I don't know if you could do a feature film with him because ~communism~ (though I guess not all writers portray him the way Miller did), but lord knows I'd love it.