We'll hear about Jon's smiling enemies. Jon will surly wonder who that is. I would not be surprised if he would turn out a little bit paranoid like the mad king. (would also be a nice foreshadowing, if R+L=J is right) Resulting in unfortunate choices and confusion about what is right and what is wrong. And what means are acceptable to reach your goal. This would be a good continuation of the conversation he had with master Aemon: The old man seemed to sense his doubts. “Tell me, Jon, if the day should ever come when your lord father must needs choose between honor on the one hand and those he loves on the other, what would he do?” Jon hesitated. He wanted to say that Lord Eddard would never dishonor himself, not even for love, yet inside a small sly voice whispered, He fathered a bastard, where was the honor in that? And your mother, what of his duty to her, he will not even say her name.“He would do whatever was right,” he said . . . ringingly, to make up for his hesitation. “No matter what. I would love to read about Jon's "heart struggling with itself" (quote GRRM), his effort to live up to his role as lord commander while people continue telling him that he knows nothing. ;) Resulting in a downward spiral similar to what Jaime had to live through. And the conclusion to what he chooses in the end (or wether there IS a right decision at all) will be near the end of the series. :) Ok, that is my theory about Jon's greyness...I would also love to hear what others think/other theories.