Useless? What useless? We're talking about instant kills here, dude.
a "insta kill" that almost never kills anyone is quite pointless or so i think.
but, on a serious note.
having a power for snipers really would be handy, and you could perhaps add a difference based on your AG stat, if you've tried to shoot a moving target in the eye you'd understand why that'd make sense, since we're not taiking about a bullet to the chest, but rather to the eyes, which are a very tiny part of the body, it does make sense.
also, it would make the minigunners suffer if they could be seen and shot at a greater range than their miniguns allow.
i don't know how powerful they are in FOnline, but in fallout 2 i couldnt hit anything at little over point blank range.
cheers all.
-Ulrek-