The more I read about Delves, the more I am reminded about Visions of N'zoth. Don't get me wrong, I loved the Visions. But they also were very short to do, with variable group sizes and difficulties, and you got decent gear from them.
Calling it now: That light source from the ceiling that dominates the zone is actually the tip of Sargeras' Sword: the Arathi had built a Holy Light shell around it to hold back the Fel.
It's great to hear from Anne. I guess no Calia Menethil or Thrall/Aggra's child/children? No Horde council? Lillian Voss?
What if that huge crystal in Hallowfall is actually part of a huge Naaru?. It's said that it cycles between Light and Void like a Naaru does during their lifecycle, and now it's about to do so.