Early raiding in World of Warcraft required wide variety of attunements, from "Hey! Go touch that rock!" to "Hey! Go do every almost raid and dungeon in the expansion!" Over time, many of these attunements were eased or lifted as the playerbase grew and more people were interested in experiencing the current endgame. In Wrath of the Lich King, we had just one fairly minor attunement, and that raid was in the initial tier of raiding for the expansion. The only real attunement since The Burning Crusade has been to reach the level cap and learn to perform well enough to not get kicked from the group.
As we look to the future of raiding, maybe we should look to the past as well. While attunements could often be time-consuming, many of them were completed by just playing the game normally, with some added direction beyond "kill mobs to collect phat lewts." Several attunements added much of the epicness that long-time players say that the game has lost over the past two years or so. Attunement quest chains also introduced us to a host of interesting characters and often fleshed out the lore behind the raid we were trying to gain access to at the time.
Given the current state of the game, could attunements return to the World of Warcraft? Better yet, should attunements return?