Proto Drake removal

I dont understand why the plagued and black proto drakes have to be removed. It doesn't improve your in game performance, it's just for showing that you accomplished harder than normal tasks. I don't think they should be removed, some people may have started a bit late or their server just doesn't have any guilds that even aim for the achievements.

Let the ''more casual'' or slower crowd get them, because the more hardcore will only be getting the ulduar ones so why would they care? Without a reward, there is no incentive to go back to naxx or malygos and makes blizzard's work for the past year now worthless. The achievements give people something to do, why not leave the rewards