Justice League: 10 Ways Zack Snyder's Cut Could Set Up A New DCEU
10. A Knightmare-ish Future
As confusing as it may have been, Batman v Superman: Dawn of Justice's "Knightmare" sequence was undeniably intriguing, with the Caped Crusader finding himself in a desolate future ruled over by Darkseid and a mind-controlled Man of Steel. Snyder has confirmed that it will be referenced in Justice League in some way, but there's definitely potential for that to be revisited.
The Flash is going to introduce the concept of a Multiverse, and if the Scarlet Speedster's trip back in time to save his mother creates a new future, then this one could very easily take place in another reality/different universe. Snyder taking charge of a TV series or movie set in "Knightmare" makes perfect sense, and gives him the chance to tell the dark sort of story which clearly appeals to him.
While Man of Steel and Batman v Superman alienated a lot of people due to their tone, knowing that this was an "end of the DC Universe "sort of tale heading in would arguably generate a lot of interest. This grim future could even lead to a number of spinoffs and stories all controlled by the filmmaker.