3) The Movie Could Feature The Birds of Prey
Seeing as we know Gotham City Sirens will feature a group of DC’s female villains, it makes sense that it might also star the universe’s team of female superheroes, too. While we don’t know this for sure, it was earlier rumoured that the then untitled Harley Quinn movie would find a role for the Birds of Prey.
The Birds of Prey have a longer history than the Sirens, and date back to 1996. Also based in Gotham City, the Birds are led by Barbara Gordon, after her paralysis at the hands of the Joker and in her Oracle guise. The other two primary members are Black Canary and the Huntress (two characters familiar to TV audiences from Arrow). Over the years they’ve been joined by a bunch of other heroines – including Poison Ivy and Catwoman, funnily enough.
Having the Birds of Prey show up in the movie would be a lot of fun, considering characters like Batgirl and Dinah Lance haven’t really ever had their due in live-action. The film would also hopefully do the team right, after the short-lived TV show from 2001.