Originally Posted by
Senjai
Completing Naxx without a single person dying awarded "the Undying" title; the black/plagued proto-drakes were for completing the original Glory of the Raider 10/25. The mount rewards are a tradition they've continued through every single raid tier, but back then, their intention was to remove them after the content was trivial. The problem, though, was that they removed the black/plagued protos with little warning (maybe even none - I don't really remember, it was a long time ago) and the players, rightfully so, were upset. They promised that in the future, they would give ample warning when the Glory of the Ulduar Raider (the current tier at the time) mounts would be retired... but that day never came. They haven't removed any of the "Glory of" mounts since then, either, so the original two were available for a whopping 6(?) months before they were taken away. Blizzard, in typical fashion, didn't want to renege, and now the only way to get those mounts is a miniscule chance of one being in a BMAH container - which I think is total bullshit. Then again, I don't believe that anything should be removed from the game in the first place, at least regarding PvE content (excluding special events like Opening of the Dark Portal, Zombie Invasion, etc.)