5. The Justice League Needs To Face Huge Villain(s)
The villain in the movie is Maxwell Lord and an army of cyborg O.M.A.Cs under his control. In the comic books, Lord was a one-time ally of the League, before going bad and being killed by Wonder Woman in a controversial story from a few years ago. He isn't exactly the kind of villain that would need the whole Justice League to defeat him. The fact that Jay Buchrarel (yes really), was cast as Maxwell Lord, means the villain in the movie would have been extremely weak. The Avengers dealt with a souped-up Loki and a whole army of inter-dimensional aliens. In their first outing, the Justice League would have fought Seth Rogen's skinny mate from Knocked Up. There are
plenty of options for villains that would pose a serious threat to the League.