It also makes a difference whether China gets a bad rapping for pumping political prisoners full of anticoagulants before shooting them so that they can serve as organ donors, after the execution, or whether they can do that in the full conscience that such things are considered desirable and normal.
If a technology has only criminal uses, it is commonly accepted that research into it is not worthwile. Think of all the exciting ways to build new explosives that are more suitable for suicide bombers, or of all the new and exciting ways of taking planes off the sky with a store-bought laser pointer. These must surely be things that science will pass through eventually, but I doubt anyone will be encouraged or funded to do so.
However I would question whether this technology will be perfected sooner than other forms of regenerative and organ growing medicine that will make it mostly pointless.
[1] http://www.sciencedirect.com/science/article/pii/00222836929...
What if we're headed for a world where the rich and powerful hire body snatchers to kidnap people off the street to provide bodies whenever they need a transplant? What if there are loopholes in the criminal justice system or covert government agencies that will allow people with the right connections to get access to an organized supply of helpless victims?