The other was the scene where Diana and Steve Trevor arrive in London.
One assumes that with Patty Jenkins there, the implication is that Wonder Woman has all three of these key elements.
One was a fight scene, which we can assume was designed to show off the heroics.
By claiming that “heart, humor, and heroics” are three things that that DC films need, there is a tacit, if not a direct, admission that the films are currently without those things.