I pretty much hate this casting. Smith as Deadshot is just stupid. No reason he couldn't have been Bronze Tiger or Black Spider. Hardy should have been takign the Deadshot role. Joker and Harley just really don't belong at all. Only real positive are the choices for Waller. None of them are CCH Pounder, but all of them could work out pretty well.
I'm surprised if Ritter is a legit choice. I like her, but she wouldn't be believable in such a thing at all. Out of the women De Gouw looks the best though Huntress in Arrow did her no favors on impressing anyone. Not sure how much of that was her and how much was just bad writing.
Don't know either of the guys though I think Colter has the better look for the role.
I'm not sure why Harley is even this. She was never a member until the New 52 and the stories form there have mostly sucked. Really wish they would focus on the older version with Bronze Tiger, Flagg, Deadshot, and Digger. In truth though I probably won't give much of a damn what they do if they hire CCH Pounder to play Waller. They can have my money regardless if they do that.