Quote Originally Posted by Lyth View Post
is actually a more forgiving version of Inner Release in disguise.
Thats actually Burst Strike.

More on topic, Gnashing Fang has its own cooldown and is a weaponskill, when you begin the combo it starts ticking, if it were a single button the CD for sure wouldn't start until you finished all the steps, which would make the job slower.
And if they changed it to oGCDs then you will have a DA lvl spam with ShB MCH deficit.