4) How The Mother Boxes Were Used
Every single tentpole superhero blockbuster needs a MacGuffin to propel the story forward, and in the case of Justice League, they were the Mother Boxes. While it’s true that it did avoid the “giant sky beam” as seen in multiple superhero films, it still took liberties with what the Mother Boxes are and how they’re used in the source material.
In Justice League: Origin, the Mother Boxes are used to created boom tubes, which are basically transportation devices. Once activated, they open stable wormholes, which allow Darkseid and his army to travel to Earth simultaneously. Interestingly enough, in both Justice League and the comics, the big bads looked to terraform our planet. However, in Orgin, Darkseid used machines similar to those in the first DCEU film, Man of Steel.
Since they were already used, then, it makes sense that Justice League would repurpose the Mother Boxes to accomplish the same goal. It also reduced the number of them from the hundreds used in the comic books, to only three. Finally, it’s worth mentioning that the “Unity” that Steppenwolf created in Justice League by forming the Mother Boxes was a new idea for the film, but it did serve the plot well.
