I actually watched a few highlights of Williams, and I think if he can develop a consistent 3 point shot, and his passing proves to be acceptable in today's NBA. I think he can carve out a role to become something more than a back up big, yes his size/wingspan will limit him. But most large slumbering big man will also have trouble keeping up with him on defense. I think the key is to have a good bruising big next to him, to help box out, and guard the paint. Williams seems like the guy who despite his strength and weight, he can still surprise some people on weak side help defense.
Excited to see how far this guy goes, I'm rooting 100% for him, along with Tacko Fall & Edwards.