Futurology

Putting human organs in a critter has the potential to act like a bridge if we’re not careful, and essentially spawn new covids.

Thats exact a problem. I personally think the solution could be a mixture of organoids and using this methode to create new organs. Since we are already able to cultived organoids. The problem is that his tissue doesn't grow in the form of "natural" organs and do not make connections with the blood and nerv systems.