Then you need to read up on warrior and pally gear guides. If you gear for block on a boss fight then the DK will end up having waaaaaay more avoidance. WAY. You can't stack avoidance and block at the same time. There's a term for a warrior who stacks block against a hard hitting boss:
Originally Posted by Lulia
Of course we do; it's good gear for trash and for lower level content. Also fun to use for making big shield slams when questing. Since our DPS is lower it's the only fun we get there. But I assure you, no progression warrior is wearing block gear on a hard-hitting Ulduar boss unless it's all he/she has in that slot.
I see plenty of block value on gear and Warriors and Paladins eat it up. I never roll on it, of course, because I can't use it. However, Ulduar 25 is full of that sort of gear.
I already did above. I have a bit over 1k SBV in my tank set for bosses. If I had much more than that I would have significantly less avoidance and would die more often (it's just the way itemization works; we don't get block for free, we have to give up other stats if we want to gear for it). I have around 16% change to block, and with critical block every third block (over time) is for twice that (2k). So on average I am blocking 1,333 from every 6th or so melee attack. If a boss hits me for 22k after armor, etc, then over time I get hit for 22k, 22k, 22k, 20,777, 22k, and 22k (assuming no avoidance). Assuming you don't avoid them (really I'm assuming that we avoid an equal amount of times, since our avoidance is presumably identical now) then you get hit for 22k each time.
The buff to SBV may not be a big change, but show me the math that says that shield block and mitigation from shield damage isn't useful, or is less useful than the effective armor that DKs will have after the nerf, maybe then I'll be a little less worried and a bit more optimistic about my survivability.
So you get hit for 132,000 damage over this time period, while I get hit for and average of 130,667 damage. Now I can choose to stack SBV and SBR in order to block more (and more often) but then I get hit more often, and avoidance is much more powerful, so in reality the more I try to stack block the greater damage I'll take compared to a DK on hard hitting bosses.
Unfortunately, this is just a myth on hard hitting bosses. I agree with you for trash, but trash doesn't usually block people so much (and there are multiple tanks to help).
My issue here isn't in being more powerful than other tanks, it is in the fact that we have lost much of what we had to compensate for not having a shield.Even if the shield block buff is marginal, having a shield does account for something significant.
Blue posts have already said that when they actually fix block they're going to have to nerf other abilities to even us out. Maybe they'll decide they don't have to change block after this, or maybe they'll overhaul shield-wearers a lot in the next expansion and we'll have a lot less avoidance or something, I'm not sure. But it certainly would not be fair to actually buff block (if they do overhaul it in the future) and leave everything else as is.
If it doesn't, then I would expect that Blizzard will do far more down the road to ensure that it does, and, when they do, where will that leave DKs?
No offense, but your healers will have to heal you through it, just like they do for everyone else. IBF was OP because you could time it and your other CDs/trinkets for essentially every bit of spike damage in the game, while other tanks couldn't. On Iron Council even with a glyphed and talented 2 minute SW I'd pop that on the first fusion punch, use my last stand/enraged regen macro on the second, and start pressing trinkets (of course I have to give up my stam trinket to have two click on use trinkets so there goes 1.2k HP). Even so I start getting hit by most of them full on after the 4th one until my CDs come back up. The healers have to take up the slack, and that's how the devs want it, that's why DK cds are being brought closer to everyone elses' rather than having all the other tanks get lots of CD uptime buffs.
However, I'm worried about how I am supposed to compensate for the loss of Icebound Fortitude uptime that I had. I really don't know where to compensate for that. I could gem for more avoidance, but then I'll lose more of my precious hp, of which I will lose a decent chunk after this change.
All of this said, let me be clear; if DKs truly end up on the PTRs as the least survivable tanks, that is NOT fair and will have to be fixed. My guess is that a targeted armor buff would be the best candidate, as if there are any disadvantages it will be against physical damage. I'm just trying to counter the "sky is falling" mentality. It's not, and if there is an over-nerf it's very slight and we can all agree it should be fixed (if it's needed). It's NOT ok to pretend that block is in any way equivalent to a 1 minute IBF cd, which is basically what is being said here.
Edit: Lulia, Shields do not help you avoid as a mechanic. Of course different shields have different stats on them, and some (like the shield that drops from 25 man patchwerk) have avoidance stats, but that is just like the stats on your weapons, etc. Shields are offensive weapons (e.g. shield slam) but they convey no additional protection aside from their base stats and the block mechanic.