How about Kenny as the Season 2 protagonist? Obviously we've got a lot of history with him. His last act in Ep. 5 was to change from a creature of pure selfishness into someone who can sacrifice himself for others. He's deeply conflicted at this point and (if he's alive) he could go either way. He's not the blank slate Lee was, he's a muddied shade of grey.
In other words, it's a good starting point for a (new or returning) player to begin making tough moral choices for him.
Plus, we were given the option of asking that Kenny take care of Clem. Foreshadowing? Did anybody pick that option?
Anyway, maybe Season 2 could be the story of Kenny's redemption! If he found her I think he'd do anything #ForClementine.
And I'm bookmarking this post in case that happens so I can point to it and say I called it.