Considering the movie's called Suicide Squad, you have to expect some amount of casualties when the film is released in August. It's literally the underlying basis for the film - the members of the Squad are expendable, and therefore dropped into the most high-stakes, high-risk, low-chance-of-success missions there are. It would be counter to the point if there weren't any fatalities along the way. It's literally up to David Ayer how much blood he wants to spill, and how much Warner Bros. want certain characters/actors to stick around for potential returns to the franchise. Ayer - crazy filmmaker that he is - definitely has a penchant for death and gore as he proved with both Sabotage and Fury. It's easy to presume that the body count on this one will be fairly high with him at the helm. But who's in line for the chopping block? Ayer and his bosses have to be making guesses as to which characters are going to be fan favourites, so as to keep them safe and sound for a sequel. But hey, that's even presuming that they want to leave anyone standing at the end of this thing. Not that they would dream of killing off the entire cast... would they? Well, you know what they say about the crazy ones...