I can see why they might make that call, but I think it is the wrong one. They almost had a Doctor/Companion dynamic going there in the pilot and it would have been good to build on that. By not having that kind of audience surrogate I am skeptical of their ability to appeal to the broad audience necessary to last.
). Hopefully she won't show up in Constantine, especially if they are using the New 52 comics as inspiration. She was ok in Smallville, but they didn't really get her right there, either. But if she has to be used by any of the shows, I wouldn't want her tied to Constantine outside of the bad comics.