I dunno. I haven't been following the BTS production much; but this feels like they (director, writers, studio?) are trying to get as much in as possible because perhaps a sequel isn't guaranteed. (Despite Batman being a bestseller.) The director keeps describing it as noir, but this seems a long for that. And this isn't supposed to be an origin story, so what's filling the time?
If it's long and great, that's great; but the runtime is the first thing to give me pause so far.