The bits in the trailer are visually similar to Batman v Superman, even with the bluish hue, yet the tome is very similar to that of a Marvel movie.
Snyder might have taken notes from his critics, besides the humor, and more joyful attitude of the characters, Ezra Miller looks a lot les like a slacker and more like the TV version.
It is also noteworthy that Bruce Wayne is the one recruiting other heroes, not Batman.
It is also noteworthy that the Elongated Man is not included in this movie. Well, no, that's comes without saying, but I noticed anyway.