I would argue that Incite Emotion, at least, is not extraneous to feeding.
Still, I see what you mean. The thing is, "skill roll to hit, weapon 4, range 3 zones" is a pretty puny attack by elder vampire standards. I can't see any Black Court elder, spellcaster or not, using such an attack much. And if that's the big gun of a Jade Court elder, they won't be much of a threat.
You could expand the power so that it's possible to invest, like, ten Refresh into strengthening it, but that seems like a hassle. Making ranged feeding into something that you use with Incite Emotion, Evocation, Natural Weaponry (chi drain), or whatever just seems easier.