Imho the leaf covered tome isn't updated.
Today it's very boring to be a raiding warden.
Our position in the MT group isn't needed (our MT group is today : guardian, templar, defiler, dirge, assassin, and conjuror).
Fury is most useful in DPS group
So, what is our futur in the game when you consider that the high level (not even the high end) is mainly raiding ?
Today, give me a reason to enter in the TOP6 useful raiding healer ?