People keep saying the Dream isn't relevant, but it's far more relevant to the Primalist beef as it contains the one thing that they desire: a copy of Early Azeroth.
I have a feeling Fyrakk and the Primalists will die in 10.2 so we can focus on the Titans/Keepers in 10.3, but I'm not sure you can call that the real plot of DF. Its more about the Dragons backstory and future while 10.0, 10.1 and 10.2 deal wit the primalists.