Despite downvotes, I think this is a reasonable concern, especially concerning all morally grey areas of surrogacy and black areas with current organ harvesting and past forced sterilization programs. Reproductive organs and rights to have them are much more important, so all the moral issues with transplants become more pronounced and important when reproductive organs become potential transplants.

What would CCP do in Xinjiang (or any of their death row prisoners) if there were a market for reproductive organ transplants? Voluntary participation in a market for reproductive transplants seems fraught with ethical issues. It is one thing to sell a kidney when you have too, in exchange for some amount of money and possible later health issues, but totally another if you lose the ability produce offspring. Will the hypothetical transplant sellers have position to negotiate in the full price of lost offspring?

These issues are too late to be resolved when the technology exists, because at that point there is tremendous pressure for anyone with any power to take the path of least resistance and maybe the largest personal profit. It is possible that the ethical route is not to do some kind of research (because we can), but start developing approaches we not yet can do but would result in a better future.