Honestly there are many ways to introduce a new landmass: Odyn wants to go there and work out some stress; Iridikron goes there and tyr compels us to follow him; Freya warns us to go there.
The problem here is: what is known about that landmass? It's the first time the player and the character know the same things. Think about it, one of my toon is a dreanei paladin, what the heck should he have known about chen stormstout? on the other hand I knew who Chen was and what panadaria was. This time we (characters and player) know the same informations: there are heretics (very well defended and one could infer technological advanced) in avaloren; a dragon has gone to the west and could have given birth to new dragons (how? what kind of dragons are? what kind of "powers" do they posses?); pirates returned with riches after going to the west; and there are earthens that mysteriously act like dwarves in Khaz Algar, and we are presuming Khaz Algar is in AValoren or near it.
Honestly can I admit I find this setup more interesting than Dragon Isles and Pandaria?