I feel like if the deal fell apart, they’d just have to completely revamp the whole concept, because there’s really no runner-up for what they’re going for. There’s JDM, but that makes the whole thing a bit Snyder-heavy and I think they’re probably trying to draw in folks who maybe didn’t love that era of DC films. There’s Bale, which would surely create buzz, but the “realism” of his films kind of clash with this concept whereas the more heightened nature of the Burtonverse allows Keaton to take part. And lastly, there’s Pattinson, which would also surely generate buzz, but would probably change whatever post-Flash plans they had.
It’s gotta be Keaton. And I really feel like they’ve put too much out there for it not to be. Hopefully this is just a matter of crossing the Ts and dotting the Is.