Honestly fans of DC over Marvel should be happy. Because even a worse case, Snyder leaves justice league maybe delays, doesn't mean this movie does dismal in box office.
The worse case here is really likely a win win, better directors,a new direction, and you still get your DCU because no way this movie does poorly enough for those plans to change.
In a coincidence, my wife texted me she would take one for the team and go with me this weekend if we went to a matinee...so maybe I will get to see it. The batman fanboy in me is likely clouding my judgement, but I still want to see this soonish.