@PinkLady4 - I share your fascination with the ability of nerves in their attempts to reconnect after a nerve is damaged by injury or a neurological condition. It seems like the damage to the nerve happens very quickly, but the healing of the nerve (many times not a complete healing) takes a long time, but can happen.
Yes, it's really too bad that the body can begin the healing process of damaged nerves, but often can't completely reconnect the nerve fibers and make the nerves function properly.
If I had Wallerian degeneration, I think I would be reluctant to have surgery. I would be afraid that it would be too delicate of an operation and too much of a risk. One might come out in worse shape than they started.