I haven't seen it yet. I'm still torn. I wanted Will to be a hero in the DC Universe, John Stewart! Alas, it won't happen. Also, due to corporate culture, I'm sure he won't be a Marvel character anytime soon (Blue Marvel! Okay, get Denzel!).
I guess a Deadshot film isn't out of the question, a prequel film or a sequel from here. Just set him against some people who are "worse" than him, even though I'm sure he's killed some "good" folks in the past.