While fans have "too much, too soon" fears about what Zack Snyder is attempting to accomplish with Batman v Superman: Dawn of Justice, Snyder would have you believe that now is not the time to be skittish. Dawn of Justice is a film that's attempting to blow the doors wide open on the DCEU and hint at character and concepts that can be further developed in spin-off films and team-ups. Speaking on Doomsday in particular, Snyder promises that Doomsday has a backstory that will lead to interesting developments further down the line of the DCEU, possibly in Justice League. Said Snyder, “Well, you have Doomsday, right? He doesn’t just crawl out of the ground. He has his own mythology, right? So that has to be explored. To us it really made sense to give [Doomsday] to the audience now. I really wanted to make the audience a promise that… though I’m super excited and happy and fulfilled by the conflict of Batman and Superman, there’s also a bigger world to start to think about.”
In fact, Snyder says the ever evolving road map for the DCEU is starting to solidify, which allows for more misdirection in the marketing campaigns. Make of that what you will. "[The DCEU roadmap] is constantly evolving, but we’re starting to get a handle on where we’re going with the world. That’s fun because it allows us now to be driving toward a goal that we don’t have to make up as much. The rules can be the rules, and the movie can exist in a closed universe… it allows us to tie things together. If there’s a movie over here doing this, and we’re over here doing this, now we’re all on the same page.
It allows for a coherent universe, which is important. I think that makes the experience a little more satisfying because we know where we’re going, so the misdirects can be stronger and the reveals can be bigger."
Batman v Superman: Dawn of Justice arrives in theaters on March 25, 2016.