I said it before in this thread but I think skipping right to Gotham City Sirens is moving one step too fast. The dynamic between the three is that Harley and Ivy are established BFF's, with Selina entering the friendship as somewhat of a third wheel who stirs up the pot. They need to find a way to keep that intact. And for fukk's sake DC, do what's right and get Paul Dini as at least a creative consultant. Also, Ayer seems like a weird choice for this because you need someone who can nail these female interactions that form the heart of the movie, and Ayer is pretty much one of those machismo male fantasy directors. That's probably the weirdest decision about all this.
And not sure why everyone's in here talking about the Deadshot movie, although that's not even as baffling as people talking like Will Smith as Deadshot was anything special. The character had literally only one memorable scene in the movie and it's him busting his guns real well. Will added absolutely nothing to the role but arbitrary star power. I get building a movie around Will Smith sounds like sure money but Deadshot is really a flat one-note character unless he's part of a team so I don't even know where they want to go with that.