Eighteen holes of golf to discuss SEC and Alabama players before the draft, is a great way to scout.
I still suspect and thsi tends to affirm, that Nick is the Bill Belichick designate to replace himself when he steps down in a half dozen years, or so.
Belichick knows that being a good on-field Coach is just a small part of the job for a successful program. You have to be able to run the organization from top to bottom, like a very successful HC of a big time college team does. Nick's Coaching philosophies are also aligned with Bill's, so a team he took over, would not be stripped of some players to implement another approach.
Like Bill, Nick has served as a assistant NFL coach, and also had a term as a NFL Head Coach to see the problems and contemplate what you need from an organization, from ownership on down in order to suceed. Like Bill, he too walked away from an organizational situation just not set up to do so. Discretion is the better part of valor. It also indicates intelligence and maturity.