Firstly, I will resist the urge to quip about the culinary potential of the remainder of the pig or the moral implications of using animals for their organs (especially since we've already decided, at a societal level, that eating them is acceptable).

Secondly, this begs the question, "how many other high-risk, high-potential treatments deserve resources and experimentation?" Clearly, if this is successful, the potential for adding quality-adjusted-life-years to humans is enormous. Does this inform how we view other experimental treatment? Does this inform how cryonics is perceived more broadly (at its core, another experimental tool to extend life)?