The idea would be fantastic four pve, but it would be way OP for pvp. Quiver + blood bound in the middle of control/rift/anything? There's already a lot of passive power in the ability. Adding more is not conducive to gameplay. Now if you said it adds Lockdown, I'd be more apt to agree with you as now we're just adding more zone control in a class that's made to ward and manipulate points on the map with grenades and the smoke/envenom abilities. The point of these exotic items is to accent what the class is good at, not to cover weaknesses or add additional power where it wouldn't normally be