Possible Theory?
I totally agree that the Nightmare Court probably are minions of Mordremoth, as the “Nightmare” could act as the counter to the “Dream”.
I’m surprised no one even mentioned about Malyck in this living story, but I will see if se going to show up later on. I would be even more surprised if he going to show his faces before everyone turn his head into a bowl of salad. There are so many theories going around like wildfire.
Or more interestingly, the Soundless will come back as saviours of the Pale Tree and the uncorrupted Sylvari.