Reconnecting spinal nerves does not look impossible. But I don't see any other feasible way for people whose heads are cryogenically stored to have bodies again, except cloning a new body for them.
In general, the idea of producing a body that lacks the brain but has everything else intact is very rational. Its doubtless creepiness may wane with time.
I still expect that growing particular tissues and whole organs (like liver, or kidneys, or bone) will end up being a faster route to cloned organ replacement. In particular, a body takes like 20 years to grow to the "finished" state, and a separate organ could grow much faster.
As an old (at least decades) concept towards solving this, there could be a translation interface layer between the part of the brainstem still attached to the brain, and the body into which it's going.
Aside from the technical challenges, it'd probably best have its translation vocabulary built from recorded signals of the primary body. ie recordings of actual daily movement, taken prior to surgery
Well the first step would be to understand how to undo the damage caused by freezing. We’re arguably further away from this than we are from any other part of the process. We might never be able to do this, freezing might just be too lossy.
https://static.wikia.nocookie.net/jadensadventures/images/0/...
I think what is much more intractable is actually massive amounts of axons you'd need to reconnect, and you'd need extremely good classification to connect the right axons from host body and brain together. I think the only way to do it is to coax the new body/brain combo into self-repair.