With the recent stuff they been putting out yes . And yes Defensive proficiency stacks with everything but last stand discipline it was given to us after 5 years of stagnation and so we could tank for more than 3 minutes out of 10 minutes. They are buffs not discs and once this patch comes out they will auto cast when you switch weapon sets. My aggro generation keys basically are 5 line macros and to keep it off people burning especially servants you have to use multiple keys with aggro multipliers. And like I said earlier I think you guys should get defensive proficiency just not a 30% one more like a 10 - 15% always active mitigation that should give you guys enough of a boost to make your self healing and absorb disciplines put you just below warriors on raid main tanking. At the same time you really don't need 2 hand proficiency unless they add warriors to knight 2 hand and 1 hand weapons so our sustained dps goes up as well.