This discussion may contain spoilers!
Clementine was the moral compass in season 1 but now that she is the main protagonist and people can choose options to make her dark and heartless, we will need a moral compass like Luke. For example you have the option to kill someone but Luke will try to stop you and depending on your choices, Luke will tell you that Lee wouldn't want her to do it. Or hell, maybe Kenny, Lilly or Molly will be the moral compass because they know Clem and they would be shocked to see Clem acting so dark and want her to be the same girl they knew.
If we have a moral compass in this season, who is it going to be?