Since these arms are all about throwing knives and getting your super, why not have them give super energy from your melee throwing knives? With how inconsistent the current super return is, I think this would be a good way to increase their viability.
As context, think of this as a hunter's version of middle tree striker with skullfort, where you use your melee ability to build super.
Ya you clearly didn't play back when shards came out and like 2 kills in crucible basically gave you a whole super and 1 gave you damn near half a super. Also if but how buffed it they would buff it too much because they don't know how to properly balance weapons and armor. Why do you think no one uses the aeon series or hard light, warmgod caress, crest of alpha lupi, and graviton forefit. Because bungie can't balance properly.