Fitz explains it all
Benjen is a "Wight" Walker himself, obviously.
(And if I'm actually right, is he at war with his "cousins" or doesn't realize he's a walker?)
Margary, the High Sparrow is right. He showed her her bitchiness. And she may be somewhat penitent. What she does going forward is going to be interesting.
Arya. Did she bed down back at The House of Black and White or in a hidey hole she found as a blind beggar? And did she ever catch a cat, like Syrio Forel taught her?
And are the Children of the Forest human? They said they were at war with men. Might they have made a deal with the Red God's enemy? Might they be the original people of the enemy? And is the enemy as bad as Melisandre and Co. make him out to be?