i can understand taking the evade aspect away, but i have had 28 lvls of ravager and still only 3 minimum ferocity, an nothing i do gets me higher i can have 8 stacks, but cant ever get to go over 3, even if i use abilities that supposed to add. I have read is bugged but think maybe be important enough to fix, is like the Breaches in the Pit, one of the devs that designed should get fired, is one thing to have them pop once in awhile, but finish one walk 3 ft an another spawns as i just pulled a couple rares an have the room coming yep great design!!! Sry all just venting but ya think they put little quality control, an i wont say i dont like breaches, but when your trying to push an all u get is them kinda sux, they dont equal as much on bar as if i was killing rares an such, an if u avoid they just keep spawning on you. Again sry, my opinion i look forward to replies though 
Just to add last season i played Infinite Evade Eagle spec, an it made me fall in love with a Spiritborn