First off, thanks to the people who run this site. Plenty of interesting discussion happening.
I'm no great basketball mind, but I do question why people have already decided that Williams is a failure. Does it really matter what position he plays? What position does Lebron James play? What position did Magic Johnson play? Or better to ask, what positions can and could they play?
Of course, no sane person would compare Willams to those players, but that's not the point. The point is that many great players have faced this criticism in their playing careers. Great talent has a way of redefining the boxes we place people in. Who's to say D Will will be good player? If that were known for sure, then the point of debate wouldn't exist and all NBA teams would make perfect decisions regarding player personnel.
Regardless, it's too early to make that determination for sure. His upside is worth the risk of dealing with his weaknesses. If he can conform to a traditional offense, and play his role, which is the real test, than he could be a very serviceable player. He needs to improve his shot, but that's been done before with hard work. He's extremely athletic and has a very strong frame. So, my point is that I think Adelman will experiment with playing D Will at the three in many situations. At this point, it would defy common sense to me. He needs playing time. Both for the organization to make a better determination regarding his future as a player, and because he needs to play to improve and grow.