Since blizzard seems to add the super "legendary" at the end of the most recent expansions what will MoP's be?
Personally since Thrall seems to be involved with the final raid and wither he dies or retires I'd like to see Doomhammer as the last epic legendary. Maybe helping thrall out through a quest chain will allow you to posses it at the end. If not I'd like to see Garrosh's giant axe and they could name it "Hellscream".
Or who knows maybe there will be no legendary
What would you like to be the legendary that would fit in the last raid?