Power-shift macros handle this easily. When I kitty Tanked Nef last week, I kept Greater Stoneshield Potion rolling the entire time on a nearly 10min kill (our MT went down really early and we lost half the raid).
This meme is a dumb one and needs to die.
First, Druids never fall behind Warriors on Effective Health (EH) until you start counting on Inspiration procs in the AQ40 era. Without Inspiration, the Warrior can NEVER catch the Druid on EH. That means that any massive spike the Warrior needs to take, the Druid can soak more easily.
Second, even with Thunder Clap up and zero melee being stupid about their positioning, the boss is going to parry-haste off the Tank. Bosses all have (for now) a base swing timer of 2 seconds, but even with TC, the average amount of parry-haste is going to average out to around 1.941 with a 2.2 speed weapon, worse if you go faster, better if you go slower. That means there is a non-zero chance that even if you spam Shield Block off CD, you can take a small window where you ate two Blocked hits and are now back to your base stats for a third before the CD. To be fair, the chance is small, around 0.47% average, but it is there. All of this being said, a Warrior can eat a critical hit to the face and keep rolling, and if a Warrior can eat one and keep going, a Druid definitely can.
So… AoE pulls of half a dungeon? The most recent example we have of multiple tiny hits coming in all at once are the whelps in the Suppression Rooms… they aren’t dangerous to Tanks. They aren’t dangerous to DPS for that matter. The next up would be Razorgore but if you ever have more than 4-5 mobs on you, your side is either horrendously unlucky or you have some bad DPS.
The Block Value advantage doesn’t come into genuine play for raiding for two more expansions on specific Heroic-only encounters.
That’s a funny way of saying a Druid can achieve 4-5 pieces of Warrior gear growth with a single upgrade…
Also nothing in BWL requires BWL loot for a Druid, including soaking Broodlord’s MS and Nef while a kitty. When AQ40 comes out Druids mostly stay steady on EH and we gain everything else which are honestly luxuries like Avoidance and TPS stats. I don’t think you get just how insane it is that my boot upgrade last night doubled the Stamina and AP I had before, and nearly tripled the Armor.