Don't quote me on this, but I want to say somewhere that the reason animation lock is such a bad problem now is that the upper half an the lower half of the body share animations, so they can't seperate the two. Which leads me to believe in 2.0 that a lot of things like buffs will only have an upper body animation like in WoW or TERA, where you can run and still have an animation for buffing/some magic at the same time. How this applies to things such as WS', which SE is known to be very intricate about, is still in the dark though.