they lost faith on themselves basically. If things get absolutely sh*t, I would rather have a big scale event (flashpoint, Crisis, Rebirth, whatever) to rewrite their mistakes instead of having "elseworld" stuff. It's too soon for the DCEU to be talking about Batman Beyond and stuff like that. Just recast Affleck (if he really intends to leave), keep Batman's cowl on for a couple years and when people get used to the new cast