This seems like it's sort of proof that Affleck/Batman is indeed in Suicide Squad. I mean, why otherwise go through the whole rigamarole of trying to hide him and all?
Okay, you're an assistant editor at the comic book publisher of your choice. You're boss comes in and tells you to drum up some roster ideas for a team-book they'd like to set-up for a future creative team to write. He asks for a proposal including: The roster of the team, The driving idea...