I don't think Blizzard removes a whole faction due the fact that most NPC's are gone next patch. I think the quartermaster of Golden Lotus will move to a different location. Maybe up to the chamber of lorewalker Cho or somewhere else. Just like the daily questgivers. I bet they will move elsewhere too. Only the east side of the Vale is destructed by the Sha. The west side (along the wall) is still untouched. So maybe they are moved to there.