The work at the Levin Lab ( https://drmichaellevin.org/ ) is making great progress in the basic science that supports this. They can make two-headed planaria, regenerate frog limbs, cure cancer in tadpoles; all via bioelectric communication with cellular networks. No gene editing.
Levin believes this stuff will be very available to humans within the next 10 years, and has talked about how widespread body-modding is something we're going to have to wrestle with societally. He is of course very close to the work, but his cautious nature and the lab's astounding results give that 10-year prediction some weight. From his blog:
> We were all born into physical and mental limitations that were set at arbitrary levels by chance and genetics. Even those who have “perfect” standard human health and capabilities are limited by anatomical decisions that were not made with anyone’s well-being or fulfillment in mind. I consider it to be a core right of sentient beings to (if they wish) move beyond the involuntary vagaries of their birth and alter their form and function in whatever way suits their personal goals and potential.- Copied from https://thoughtforms.life/faqs-from-my-academic-work/
I often like to point out--satisfying a contrarian streak--that our original human equipment is literally the most mind-bogglingly complicated nanotechnology beyond our understanding, packed with dozens of incredible features we cannot imitate with circuits or chrome.
So as much as I like the aesthetics of cyberpunk metal arms, keeping our OEM parts is better. If we need metal bodies at a construction site, let them be remote-controlled bodies that stay there for the next shift to use.
I see no reason to expect that superwood is incompatible with in place biological synthesis from scratch. That's entirely organic and there's no question that its material properties far exceed those of our OEM specifications.
(Now I want to change the Blade Runner reference to something with Harry Dean Stanton in it just for consistency)