BvS 2 bad guys or 1 bad guy and one massive event

Maybe we'll see Metallo or Batman taking down somebody in Gotham at the start of the movie, but I don't think it's necessary. Superman will be who Batman targets. If they do it properly, Superman doesn't have to be dumbed down while they do it.

 

an event leading up to the justice league would interesting. I'm in the luthor hire's deathstroke, creates metallo and parasite bandwagon; i kinda wanted braniac to be responsible for affecting some of the sea life, but maybe changing that to luthor and some genetic manipulation damaging sea life and blaming it on superman and the kryptonian's tech could be a way to involve aquaman into it. eh i don't know. i do believe that a team featuring batman and superman needs to have a really good reason to happen.