Phione wanted me to put this here.
Seems to me everyone who thinks the targeting scopes should not work for melee users thinks of the targeting scope as a passive piece of equipment. Just a bunch of lenses that help you see better.
But think about it. This is Rubi-Ka. The year is 29476, not 2002. Obviously the Targeting Scopes are more than just a collection of lenses.
For example, take the Yatamutchy Movement Predictor since it's description tells yo how it works. The Movement Predictor display a ghost image for you to aim at, based on where it's computers thing you're target will be.
The Targeting Scope's simply state that they add a nice bonus to your range, and also adds a bonus to your chance of hitting a vital part when you shoot.
It does not say how it does this, but I assume it is similar to the Movement Predictor:
The Targeting Scope anilizes your target, looking for weakness to exploit. When it finds one, it higlights the area on your target. If you have enough skill, you try to strike this area with your melee weapon or you aim there with your gun.
The scopes are not passive devices that you simply wear and look through. They are a collection of sensors, computers, displays, and maybe even nano technology, that activaly aid you while fighting.