UNC and Dook have the same basic problem: older HOF coaches who can't last a whole lot longer without going over the hill, who have staffs dominated by former players. Add to that a bunch of talk about loyalty, and you could be seeing the set up for a disastrous hire.
Dean Smith never would have OKed Roy Williams taking over if Roy had never been HC and shown real ability.
As I type that I have to back track a bit: I think Dean would have backed Phil Ford getting the UNC HC job with no HC experience because Dean would have delighted in the race thing. But that makes the point: you are hiring to keep a dynasty going, not to employ alums.