Absolutely, all of these...
Do
Apparently there will be a TOJ scene has been/will be filmed which will confirm R+L=J.
My concern with any of the storylines for the next season is, how badly will D&D mess them up. As I have said earlier in this tread, they do not do the supernatural well.
If Jon wargs into Ghost, the audience will be totally blindsided, where is the basis for it. The show only has Bran as the Stark who can warg. The books covered Rickon and Arya doing it as well. They also alluded to Robb doing it when the Lannister men told stories of how he became a wolf in battle. The easiest solution will be for the priestess to do it as D&D have already shown her meeting Thoros and the resurrected (un)Berric Dondarrion. I still wish that they had followed the LSH plotlines, revenge and the impact of war on the wider population (not the nobility) are such central themes to the overall story.
Apologies for the code but I don't want to spoiler it for anyone just in case.