On the Warlords of Draenor alpha, there's a feature that will allow players 91+ to queue for and run Mists of Pandaria scenarios, heroic scenarios, and LFR. And I think this is a good thing overall. But I will absolutely never queue for Mogu'shan Vaults again. I hated that raid. I didn't mind the rest of that tier nearly as much - fights like Stone Guard, Feng, Elegon just irritated me. I can't even give you a rational reason for my hatred - maybe it's because I went from prot to fury during this tier of raiding.
Whatever it is, I hated it.
Hated it. Hated it so much I can't abuse italics enough to convey to you. I will run Mogu'shan no more forever. What about you? Any Mists raids you'd sooner chew a light bulb instead of running them?