There was an explanation about doing justice in the first scene to portray Starks. Don't it being followed through when Sansa smirks while feeding a man to his own dogs or while Arya serves a man an improbably-acquired pie with his sons in it.

It's probably for the best they dropped Lady Stoneheart, since while the books make it clear there is nothing just about her, I doubt the showrunners would have grasped it.