Earlier today I have had a disccusion about the fact that if you go to LichKing Heroic 25 & you have Prot pala in raid, then you do not need a disco priest wasting talents in renewed hope, as he barely does anything else then bubbles... People swarmed me that I am noob, but think again ! Do you really need 3% damage reduction after each bubble if you got it covered by paly or do you need extra crit on heals if you do not cast them ( most of time )...
Now, about HP pool, expertise, hit, armor, avoidance, mitigance and all that crap overall.
It is well known that tanks always tended to go full stamina, stamina everywhere, ignoring most of other stats. Some time ago in TBC I were in an guild with my warrior tank & there was another warrior tank. He basicaly did go all stam, as most of the people did and I aimed for crushing immunity, which was wise choice to do , obviously. Either way, he was taken as MT ussualy because he had aprox 4k hp more then me, and in most cases he was taking huge spikes, and I was told when I get more HP, i Will MT... sigh, fail one
WoTLk & ICC
Almost Every tank does go for full stamina on everything, yes, I am aware that you will get slightly more passive heals via JoL & Leader of pact, but are you guys not forgeting something ? Hit does not have to be capped, but it is good think. As you will hit the boss each time and the empty space between the heals & hot ticks will be also covered by some minor selfheals, same goes for expertise ( lets assume u r dodge capped ). Each time boss does parry, u lost a chance for your weapon enchant proc ( does not matter which u did pick ) & u lost a chance to selfheal via JoL or LoP.... You might think it is nothing, as u ussualy get overhealed, but it is important in times between the heals.
JoL / LoP is based on Max HP, true dat, BUT ! If you miss every 2nd ability or boss does parry , what next ?
Threat ? After initial pull it is ussualy not a problem at all, even if u got full 277 geared people trying to improve their ego on your side.
Parry haste ? As little example, go to tank valanar + other melee mob together with 0 or dodge cap expertise ... healers will have really hard time to keep you alive, same goes for many other bosses.
Another point about not maxing stamina:
Tank with 40k HP unbuff did down LichKing & survived it, tank with 45k unbuff hp did down lichking & survived it, tank with 40k was called a noob, cuz low hp pool.
Imo, point of tanking is simple:
A Have sufficient ammount of health so healers can top you up before you die even if u take more then one hit in row or healers are not able to heal you at that point
B Once you reach A, get decent ammount of Avoidance ( dont get too much, else you would have problems with healers that heals after u take damage )
C After you reach A & B, get as much mitigance you can, so once you actually get hit, you get hit for as less damage you can take
D If you are healable without much stress & your HP pool is suffitient, get hit rating so you dont have to stress that much with TPS , but as well you will be able to count on your abilities - Not like your judgement or whatever else will miss and you have to wait xxx seconds for its CD
E Get expertise soft cap, so you dont have dodges
F Once you covered A, B, C, D & E, get more expertise, because it comes more defensive, as you will remove more parry hastes, therefor giving healers less stress & more time to react
The world of warcraft is and will always be based on luck, wheter it comes to finding good people to play with, or RNG fights, random drops & roll( or whatever ) & tons of others things.
BUT, as raid performance goes, you should always try to remove as many random factors you can:
Deathwisper, new adds appeared, rogue that can tot u or hunter is MCed, u rely on your self only, therefor each miss or parry can lead to a DPS dying.
Saurfang - Oh shit, my taunt missed - or he did parry me & I did not avoid, he had 90% power & he 2 shoted me in less then a sec.
LK - I got shambling on me, second appear, my taunt missed, my avenger shield missed, by judgement missed, healers healing infest, even if hunter / rogue ToTed / Mded me I was unable to keep aggro, shamb came to one healer & shockwaved em all.
Those are bad scenarios, but it happends & it can cost you precious time, effort & everything else, just because u wanted to have 3k more useless HP
P.S.: Sorry if that post was too long, complicated, for someone perhaps wrong upside down, my english sux & perhaps I am trolling or whatever, but if you did not catch the points, then there is nothing else I can do.