It is interesting thing about coaching styles. Campbell has a "style" that is true to him and thus it imprints on his team. The problem with that rah, rah, "all in it together" "us against them" style is that at some point it goes stale. It was PERFECT for the Lions who have been as ba a team for the last 30 years as there has been. They now find themselves on the verge of relevency for the first time this century. They have dug out of this hole with Campbell and he is leading them into the light.
Like I said, this message is perfect for this team......at this time. And it will the perfect message UNTIL they have some adversity AFTER some success. Teams will start to tune it out and it will get stale. These aren't kids you are dealing with. These are grown men with families and futures riding on some of the decisions Dan makes. They know he "loves" them. They know he cares. BUT what grown men want and need are good game plans and good teammates.
He's great for now, and deserves all the accolades he receives, but long term, say 2-3 years down the road, they will start to tune him out.