I am wondering if Carl attitude is permanently hardened now, think about it, put down Shane, put down his own mom, killed a young teen (non-walker), and is defying his dad more than ever.
Hershal is worried about him. It will be interesting to see if the writers turn him into a mini-Merle or mini-Shane. It seems the groups always has to have 1, and maybe Carl is it. But now that they are moving to a more democratic style leadership it won't matter, the adults can always outvote a kid.
If they do move Carl to be a bratty rebel, I like the younger Carl better, nobody likes a young, disrespectful punk. I really hope the writers don't turn into that punk, because until now I really liked Carl as a character, but now I am on the line next season will see what way it breaks.