This is the fastest I've ever cleared a tier of content.
It's not like the content was trivial either - Elegon and Will of the Emperor in particular are pretty demanding fights. But clear it we did (thanks to some extra nights). The Elegon and Will of the Emperor kills were on 10s, but still. I'm glad we got through everything. It means we can start heroic modes tonight and I hope we can get through at least one boss this week to climb up the ranking ladder.
So far, this is the most fun to tank content I've seen in Warcraft.
There have been other tiers with fun to tank fights - Ulduar had Firefighter and Yog-Saron; Ice-Crown Citadel had Blood Princes, Valethria and Lich King; Bastion had Sinestra and Cho'gal; Blackwing Descent had Nefarian. I honestly don't have very good tanking memories of Firelands and Dragon Soul but they still had Baleroc, Rhyolith, Ragnaros, Zon'ozz, and Spine.
But man, look at Mogu'shan Vaults - Stone Dogs and Soulbinder might be simple but tanks play a vital role there; Feng depends on your tanks to make or break the fight; solo-tanking Spirit Kings is awesome; Elegon is a hectic fight and demands a lot from every role, and is downright gorgeous to boot - and Will of the Emperor is the best tanking (and melee DPS) fight in a long, long time.
This is the kind of tier I've been waiting for. And I'm very happy to be raiding it with a dedicated, hardcore guild driven to succeed and progress in hard-modes.