Season 2 should have ended with..
All the (major) characters in the hut and they kill Joe.
I think it would have been an interesting ending to have the audience get satisfaction of 'justice' while also still have them need to reconcile that with that fact that the town had banded together to actually kill a man and make the whole thing go away.
Would have created an interesting internal conflict for us.
That being said, I'm not sure this ending would fly if there's a season 3 and Joe comes back into the picture somehow.
Made you look!