I guess on the show, but Mance has such a greater true impact on him in the books. He really sees a new and different model of leadership and what it takes to be a leader from his time with Mance.

You've probably just made Enoras night with that comment...she's a bit of a Mance fan

I adore Mance. I'm just not crazy about the show version of him. The book version of Mance is such an interesting person and different type of leader than what Jon has seen in the past. Mance's place in the far north is based on ability & charisma, whereas what Jon has seen his whole life is based on birth & inheritance. Even at the Wall, the Sers and noble born are fast tracked to leadership. In the far north Jon sees a bastard - like himself as far as he knows - who has risen to become a king on his own wits & abilities. Which does broaden his perspective of what makes a leader.