Mike
C-U Townie
I think the hang up is there just cause they're so different. X's and O's for offense and defense are relative to the league because the NBA is has crazy rules for helpside defense. Because of this the way offense can and do scheme their spacing is different than what you see in college. The NBA also has a shorter shot clock which really reduces offensive options, but is offset by the insane level of talent, which is obviously way higher than college.
Off the court, NBA players are adults. Professionals. They don't necessarily require life mentoring after their first year unless they seek it out. College students are learning how to become reasonable and professional adults. They need to be taught those habits every day. An NBA coach might not be used to doing that much off the court intervention, or quite frankly might not want to. I'm not saying this is true of Monty, but it's a legit concern anytime someone makes that jump.
Let's survey the top 100 2018 recruits and ask them if they would rather play for an NCAA or an ex NBA coach.