I’m guessing that Gavin O’Connor’s version of Suicide Squad 2 would have seen its main characters also fighting an organized crime figure, providing a much more grounded threat for Task Force X to deal with compared to the mystical Enchantress and Incubus in the first Suicide Squad movie.
In any case, that story has been scrapped, leaving James Gunn free to embark on a new creative path.
From what little we know about Birds of Prey, the story centers on Black Canary, Huntress, Harley Quinn and Renee Montoya crossing paths and clashing with Gotham City crime boss Roman Sionis, a.k.a.