In your opinion, which specs need certain Legendaries to perform to their stereotype? This means your class cannot perform AVERAGE or slightly above average without a legendary. It means you look and feel like trash without a certain legendary and/or have considered rerolling due to the legendaries you have received. Legendaries is plural as it means you're more than 1 and done with a class. The first 3 are easy folks.
If a Legendary changes your DPS in the way that Draught of Souls effects Fury Warriors, then this does not apply as that allows them to excel way beyond where they should.
To prevent trolls, I've only allowed voting to be done once. MMO Champ Polls only allow a max of 20, so using Straw Poll instead.
http://www.strawpoll.me/12388058