With the number of elements taken from the comics so far in BvS, I'm predicting "Justice League" will feature the plotline of Batman getting in trouble when his fellow JLA members discover he's been keeping files on them and ways of defeating them if he ever has to. I could easily see this Batman regretting the fact that he asked Wonder Woman to help him find these people once he finds out the "human" in metahuman means they have flaws that rub him the wrong way, especially if the Flash is a bit of a joker always trying to get him to crack a smile. (Oops, probably shouldn't have said "joker" but you know what I mean.)