My guesses* and facts#:
N'Zoth is the most powerful Old God still corpreal.*
N'Zoth was the primary agent behind Neltharion's corruption.#
N'Zoth maintains the Rift of Aln in the city of Ny'Alotha.*
Ny'Alotha is inhabited by the Naga.
N'Zoth was the primary agent behind the transformation of the Highborne.
Ny'Alotha was one of the five citadels of the Old Gods before their destruction by the Titans.*
The Emerald Dream is being invaded THROUGH the Rift of Aln, in the city of Ny'Alotha.
Too many forces have been linked over the past three expansions to be ignored. Too much content that would so easily work together.
We WILL see Queen Azshara, N'Zoth, the Emerald Dream and Ny'Alotha in the future.