He doesn't suck. He certainly needs more guidance and to be used in a system that keeps him closer to the basket, but him not getting that isn't his fault.
We basically got him for free and our team is testing out different things now. Will he be here 5 years from now? I don't know. But dumping him under the reason that he is preventing a team that wasn't designed to win from succeeding isn't very logical. We'd still be losing if Mullens wasn't here and he still has potential for a lot of improvement.