As a optimistic pessimist I'll see your need for enforcer coach and raise you a "What if beneath Kellens "aw shux" demeanor is a demanding personality? We all put on a public mask...somethings tells me there's a complete opposite persona beneath what he gives off as an initial impression and both are true.
For example Payton's demeanor was very much a disciplinarian...but beneath it the players love that he wears Jordan's and seems engrossed in the culure, and he was very much a party animal, we found that out as the years passed. Not to mention the vicodin stuff, which shows an opposite side to the discipline persona