New adrenaline surge on block weapons is great start but I find that every time I get to level 3 I get bodied mid attack. I have 2 ideas for tweaks:

  1.  It should trigger automatically on the 3rd perfect block giving you your armour pips while also creating space for you to counter attack. I feel this would help combat flow better. 
  2.  loosing your perfect block stack from attacking before 3 means you have to adopt a more passive play style. I think it should be timer based with each stack lasting 5-10 seconds during which every attack receives the buff. Allowing you to continue building your stacks while still being aggressive. After the 3rd stack AOE auto trigger this would reset.