If I was in charge of the Batman movie, I’d make the trailer go like this:
We see Gotham City. Dramatic music plays as the camera pans over the city. You see Wayne Manor, the Batmobile. You see Wonder Woman, Flash, Cyborg, and Superman, standing in a line as Batman walks away. Diana asks, “Have you ever had a team before?” and Bruce doesn’t respond.
Then the music changes to something sadder, nostalgic on Bruce’s face as he turns away from the JL and walks out of the room. A booming voice-over says “Ladies and Gentlemen, the Flying Graysons!”
A little boy’s voice says, “Try and catch me, you big boob!”
Ryan Potter says, “Batman needs a Robin, Bruce.”
A girl, “I missed this.”
A cheerful girl says, “Enemy of crime and people who don’t like purple.”
Another girl says, “I’d like to see youtry and stop me from being Batgirl.”
And a boy says “Tt. You’re shorter than I expected.”
Bruce says, as he is almost completely covered in shadows, “I work alone.”
There is then a montage of someone pulling on purple gloves, pushing on glasses, pulling on a cowl, blue and black fingers grabbing an eskrima stick, a yellow cape being put on, someone’s black mask over her black hair, a gun being loaded.
Then it shows the six of them standing on a roof, just a quick shot, then it goes to the title card.
BATMAN, BATGIRL AND ROBIN: THE LEGACY
then it shows Bruce in civilian clothes, pushing open a door while he’s calling someone on his phone. He freezes, and it shows Dick doing a handstand with Damian balanced on his feet while Tim and Cass are filming it. Bruce sighs.
“You know what, Selina, I’m gonna have to call you back.”