Currently stamina recharges at the same rate for all classes currently and all the base attacks cost the same 10~15% of stamina bar. The ability to click on the Standard attack happens about half a second after you've initially clicked it. All the animations are cancelable after about .75-1.5 second or as soon as they reach the recovery frames. That means if you que up two attacks your second attack will launch as soon your character starts to return to idle stance.
i imagine that we are going to keep the animation cancel property on all of our actions unless they decide to change properties of the actual animation itself. All the actions that took up 25-50 percent (such as taunt and provoke, disorient, etc) of the stamina bar are getting a significant buff in usefulness and will probably be toned down in actual effectiveness to combat it.
The question is what happens if we are stuck in animation/ability stun such as using Ferocity when our auto attack comes around. Will it cancel the Animation and attack? Or will it cause you to skip the auto attack? Second question is how cancelable is our standard auto attack going to be?