i only play for zs so i cant speak for other kano apps. But in zs it take me approx 1k stam to kill an average boss and i can use about 150-200 stam before healing using 30 stam power atacks. I would really like to see an increase to the limit of a 30 stam hit up and extend it to 50 stam power hit and also a 100 stam power hit....