Spoiler alert! I am using lore seen in Cata videos so be forewarned there could be spoilers.
They say that nothing ends conflict like tragedy. Having watched quite a bit of the opening scenes for the horde and alliance i have to wonder if Cata will not only be the changing of the world but also the end of the war between the Horde and Alliance.
Thrall has gotten older and given up his war chief status to a mad man in Hellscream while at the same time the alliance now has a xenophobic king that everyone thinks is a revenge seeking dick. The 2 men trying to lead their sides into war are not well liked even by their own people.
I’ll break things down on the horde side as to why i think this theory is true.
Tauren – Hellscream killed their beloved leader in a dual.
Trolls – While loyal to Thrall the troll leader doesn’t like Hellscream one bit.
Undead – Sylvanas and Hellscream are very far apart in their ideas even to the point Hellscream seems racist toward the undead.
Blood Elves – The sunwell was cleansed by a Naru and Sunstrider is dead. All that is left of these guys is to break their magic addiction and they would return to high elf status. The Night Elves are very understanding even helping out the cursed Worgen. One has to wonder if they would help their addicted kin folk.
Goblins – The Goblins are basically out for themselves but loyal to Thrall for helping them during the events of Cata.
Now here is the catch…Thrall is currently busy helping take down Deathwing. The what if is Thrall and Proudmore finally fall in love and get married. Thrall returns with a human female on his side and a halfling baby. Proof that orcs and humans can live together. Hellscream and Varian Wrynn both die in battle leaving both sides with out leadership. Thrall returns as the king of the horde and Proudmore becomes the queen of the Alliance their halfling baby a sign of hope for the future and the end of the orcs vs humans war.
The trick then is to have a 3rd outside party cause a lot of problems to cement the new bond between the 2 in a war to save their world. Horde and Alliance vs someone new could be the theme of the next expansion after Cata and the end to the World of Warcraft. Then Blizzard releases it’s secret new MMO property. To me blizzard is the send you home happy kind of company that would actually end a MMO with a good story before moving on to the next thing.
An idea i had for the end is when you log out the last time blizzard caches the models of what you were wearing and sends you a “family photo” of all your character models and names on a glossy poster, a T-shirt, and a beta key for the new game maybe for $14.99. A thanks and a personalized memento for playing the game all those years.