Warner Bros. had high hopes for Birds of Prey. While Suicide Squad might have been a critical disappointment, it made a bunch of money, with many agreeing that Margot Robbie's Harley Quinn was the breakout character. So, why not make a movie with her at the core, bringing together a group of the DC Universe's most badass female superheroes in an explicitly feminist action romp? From there, it should be just a hop, skip and a jump to Birds of Prey 2, right?