I have tanked BC T1 boss as a war last night and I have relized that it becomes very difficult for war/healer to keep up to the massive damage when the boss has 3 to 4 stakes on. It seems right now PLD can survive this, but it sounds like after 2.1 PLD will not or war will be able to do the same as PLd and survive the 3/4 stakes.

From the producer letter, what I understand that at 4 stakes the fight is suppose to be difficult and tanks are not suppose to survive it. PLD though can, that is why people complaining about war.
In this fight most people stop feeding slimes after the boss split and my guess is the way for it to work for war is to have people feed slimes even after boss is split and keep the boss at 2-3 stakes all the time. If they end up nerfing PLD in 2.1 then the only way to get this fight done would either by kiting boss and have Dps kill it or keep the boss at 2-3 stakes by feeding slimes.