I enjoyed Suicide Squad. It certainly had problems, a poorly developed threat that relied too much on CGI, some of the dialog was painful, and everyone not named Deadshot or Harley was poorly developed, but I enjoyed it. It was certainly the Deadshot and Harley show, with everyone else along for the ride.
I liked the Joker and that the movie wasn't specifically about him and Batman. I liked Margot Robbie as Harley more than I thought I would, but I still think she was badly cast.