I guess the reason they keep obsessing about tone and editing is because those are the only tangible things they can still control while riding this multiple picture behemoth.
that's a good point. Though I'd say that only pertains more to the post-BvS films already shooting (which, unfortunately for WB, spans from SS to JL). I think that given Flash and Aquaman were still being written in the wake of the BvS, there's a better chance to fundamentally rework those movies than there is of salvaging something in post.