It's going to be a hot mess. Warner's just been terrible with the way they use DC. I'm still kind of annoyed that it looks a LOT like there was executive meddling and they're introducing superpowers into the Arrow universe, because they want to use the show as a way to introduce the rest of the JLA, and they don't think audiences are smart enough to understand if there are 2 versions of the character at once.

Although I would love if the CW just mined DC properties forever. You could have a Hellblazer/Swamp Thing show, or a Twilight Zone style show called Sandman Presents, and Lucian in the Dreaming library could be the framing device.