Replace the Vanguard’s charge mechanic with the Sword Throw (queue mystical chimes). When running at maximum speed you initiate the same charge animation, however, instead of doing a leaping jump attack that rarely hits anything at all, you’ll pivot on your heel in an arcing 360 spin (the sword will have an active hitbox during this spin that deals normal slash damage) and then release it as a projectile. During it’s projectile phase it will do 1000 damage and pass through multiple targets.
For visual aid, reference this video at 1:10 - http://www.youtube.com/watch?v=dhRUe-gz690
I rest my case.