3. It has a lighter tone
As Affleck’s comments may suggest, everyone working on Justice League is very keen to make clear this will be a lighter, more optimistic film than BvS. For example, the scene description below (courtesy of Collider) demonstrates the added humour.
“Standing on the dirty Gotham Police Station rooftop is Commissioner Gordon wearing a hat, tie, glasses and a long trench coat. He’s standing next to the Bat symbol and talking to Batman, Flash and Wonder Woman as smoke billows from nearby vents. As the camera slowly zooms in, I’m listening to the four of them talk about scientists disappearing. While it’s hard to figure out why they’re talking about missing scientists, it’s very much a comic book panel come to life with the way everyone is standing and framed to the camera. I’m smiling wide from ear to ear.”
As I try and hear more of what they’re saying, all of a sudden Cyborg is walking across the rooftop towards our heroes saying that the head of S.T.A.R. Labs has been taken. As he gets closer he stands next to Wonder Woman and I watch as a huge smile appears on her face before turning back to the rest of the group. It seems like she’s extremely happy he’s joined them. I silently wonder if this is the first time all of these heroes have been together.”
As the group discusses the situation, they decide they’ll need to go somewhere to investigate. As Gordon continues to talk he turns and everyone is gone but the Flash. It’s like he didn’t get the memo that when Gordon turns to talk you need to quickly disappear. Flash says to Gordon, “Do they just do that?” Gordon says nothing as Flash speeds off.”