I can see where you're going, but it's extremely more complicated than you're seeing it . . a "nerve" is composed of millions of axons. Each axon is a pathway for one specific function. i.e., a "nerve" is actually a bundle of axons, or pathways of electrical impulses. Given that, yes I can see what you mean, but damn, that's a lot of work
Plus, the neural pathways differ from person to person, so there isn't a standard we can go by to perform the operation efficiently . . it would have to be done manually by surgeon's hands, and we simply don't have that efficiency, nor a blueprint for figuring out how the brain adapts to individual situations. Even in conditions that involve a stroke, the neural pathways will heal themselves in different ways, if they even do at all
