There are currently three head coaching vacancies amongst teams that were top-4 seeds in the playoffs in the Milwaukee Bucks, Phoenix Suns and Philadelphia 76ers in what has become an unusual coaching cycle. 

With the NBA's new collective bargaining agreement taking effect with the expectation that roster construction will be more restrictive amongst existing contenders, there will be an even greater competitive advantage for head coaches who are able to get the most of their roster.

"One of the reasons I think teams are making these moves is they're sort of forecasting that with the new rules that are coming into effect, it's going to be harder to assemble huge groups of talent," said Brian Windhorst on his podcast. "There is a feeling in the league there's going to be more parity. Like we saw this year already without the new rules. So if you have parity, coaching takes on an even more important role. So these teams are making moves and trying to jostle position.

"These are really huge, big decisions that are going to affect the next short-term here, especially in Philadelphia, Milwaukee and Phoenix."