Defending Impending Victory
Every tanking site I read continuously says to avoid IV. Here on Tankspot the guide says intervene should get the talent points before Impending Victory. When the final rush is on and the boss has started it's soft enrage, the healers are lower on mana than any other time, threat of the tank should be stable and far ahead of the dps, how can it be said that 5% (7.5% with glyphs) on a 170k tank not be a saving grace and a mana saving, tank saving device?
In Theory and Mechanics, takethecake did some basic calculations discussing the amount of heals IV brings, I've finished off an ugly amount of bosses from 25% life when the healer died along with 1 or 3 dps. With last stand putting me at 202k hp and getting around a 15k heal every 3 to 6 seconds (depending on procs and how long last stand stays up) total avoidance letting me skip 1/3 of the hits of those bosses. (13% dodge 14% parry, whatever miss % I don't quite know) how is it that in favor of damage talents this rather large survivability gift goes to the wayside?
Is aggro vastly different on the higher end of things, considering I hold off 15k dps while windowing, that prot warriors need to lose a solid minute on heroic bosses and more on raid bosses of this slight reduction in healing needs?
Perhaps I'm missing the assumption that a well balanced raid or group shouldn't need the tank to lighten the load of the healer, but then, what's the point of every other defensive stat?
Is this lost in the difference between tankability, survivability and aggro?
I'm sure my math could use some buttressing, or a proper tear down to argue the otherside, but if aggro is such that we don't need much in the way of hit or expertise, why skip this?
Wick, of Dolus Nomen Hic, Dalaran