7) Injustice League
The Injustice League is a team of DC’s greatest villains who constantly clash with the Justice League. Though many character have been associated with the group at one point or another, notable members include Lex Luthor, The Joker, Poison Ivy, Deathstroke, Black Adam, Captain Cold, Sinestro, etc.
Seeing as some of these villains are already scheduled to make an appearance in the DC Cinematic Universe, or have already showed up in past/current DC television shows and movies, it wouldn’t be too much of a stretch for them to appear in the Justice League film.
[zergpaid]Then again, with a Suicide Squad adaptation already on the cards, having the Injustice League show up as well might cause too much confusion for audience members and create too many conflicts (especially if they plan to follow some of the comic book storylines).
Regardless, if they could somehow pull it off and put together an Injustice League that wouldn’t ruffle any feathers within the continuity of the DC Cinematic Universe, I think it could be a lot of fun to see them on screen.