Never saw Naxx 40, and only minor probes into BWL. And agree with Fur a lot of the new player base have never seen any of this stuff from classic WoW raids.

But I can say I 5 maned Onyxia with my team so glad I did it already soon you wont get a chance to do it. But I like that they are revamping the T2 helm to have 80 stats I dig the T2 helm.