Breakfast Topic: What game mechanic will WoW borrow next?

One of the most fascinating things about World of Warcraft is its wide variety of minigames and nods to classic games incorporated into the traditional narrative. The original game had an entire quest line dedicated to The Legend of Zelda. The Burning Crusade gave us chess and a flight simulator. Wrath of the Lich King added mounted combat in a big way, from drake fighting in the Oculus (boo), to storming the gates of Ulduar in steam tanks (yay), and finally medieval-style jousting (double boo). Cataclysm, of course, brought the absolutely sublime Plants vs. Zombies homage, and Mists of Pandaria will bring us the don't-call-them-Pokemon Pet Battles and FarmVille.

So, dear readers, come 2014 (or so) and the next WoW expansion, what new minigame will we all be discussing? I'm leaning toward a miniature fictional world, where we hop from place to place persuading the inhabitants to unite against a greater force. That could be cool -- or maybe not, as it likely wouldn't end well. What would you like to see?