Going further with your point, I actually don't think Edwards should get any minutes except purely out of necessity. I appreciate that he does rebound some, but he's just a hurt most anytime he's in the game and there's always a better guy on the bench that should be getting his time. I think Thiero does almost everything better than Edwards and has more potential/higher upside to boot. I even like what Burks brings better than Edwards.
Edwards shoots FTs well, rebounds ok, can hit a pull-up 12'-footer pretty well, and has long arms. That's about it at this point in his career. He's not a great athlete (for example, he must have one of the lowest verticals on the team), is a horrible 3pt. shooter, and hasn't shown much of a motor or basketball IQ. He looks like a guy who might become a good player as a Jr. due to developing an all-around type of game without any one thing really standing out.