When you analyze what the Borg Collective did to augment each one of their drones, some of the physiological augmentations don't make sense. Why replace one good eye with a cybnertic eye and lose StereoScopic vision by having mismatching eyes? All their drones move slow and clunkily along and have zero sense of danger. Removing a working hand to be agumented by random specialized tools makes no sense. Why not graft on Spare robotic arms in the form of a back pack unit that is neurally linked. If they want the Multi-Spectral Eye Piece, graft it on a universal socket on the fore head and have a 3rd eye that can see in various other Electro-Magnetic Spectrum (UV, X-Ray, etc).
Hmm. I don't see any point in stereoscopic vision if you can have truly accurate ranging and 3D awareness instead. Which I'd expect of the implant. OTOH, bolting the implant to existing optical processing pathways is probably more or less the whole point. Leaving the one natural eye is the mystery bit - it might be backup for all those situations where the enemy tries some devious jamming that for utterly inexplicable reasons doesn't work on biological tissue. Or then the Borg just don't bother to remove all superfluous stuff. Can the Borg run a ten-second mile? We don't know, as there never has been the need. A "Borg chase scene" just plain doesn't exist, as the Drones move like chess pieces and have the advantage in numbers in all engagements. Timo Saloniemi