His coaching style is not NBA-style at all. Nor does he have any experience at that level.
1. Defensive pressure does not work in the NBA really It's a very college-ready offense, but at the NBA level will give up 100,000 lay ups per game. It's all about matchups and adjustments. To his credit--Hurley's teams defend the 3 point shot like psychopaths. Something that is really needed in the NBA.
2. No one yet knows how Hurley will handle big-time player ego. Let alone NBA player ego.
3. He isn't a great offensive coach yet.
When you looked at a coach like Brad Stevens in college, it was obvious he had NBA traits. Matchup coaching, offensive sets, flexibility, etc. Hurley is more of a motivator as his biggest strength.
Doesn't mean it couldn't change though. Tons of potential and hunger with this guy.