Ever since the Cataclysm revamp of Azeroth the Dragons of Nightmare (Emeriss, Lethon, Ysondre and Taerar) and all the other green dragons have been removed from their zones. I know they have been dealt with during Stormrage but how come some books are canon and some books are never dealt with in the game (Me'dan)?
If you didn't read the book you might think they were just removed from the game without any given reason. Could this maybe mean the Emerald Dream might play a role in the future? Yes, this has been beaten to death but it's still one the most interesting stories in Warcraft.