Its like writing a contract between cryonicysts and non-cryonicysts.
If you allow us,the freezers, to cut our heads 1 week before death and dump them in liquid nitrogen, we will give you, the mortals, our organs.
I want to see the face of the judge lol lol lol
On the other side remember, that the more compromises you make, the longer you will need to stay in the liquid nitrogen until it is possible to be thawed back alive, and the smaller the chance for that.
Cryopreserving the entire body - the biggest chance
Cryopreserving the head only - smaller chance
Cryopreserving only the brain - the smallest chance
If you have your entire body, then it will only needed to be thawed and repaired in the distant future.
If you have only the head, then you will have to wait, and to take the risk to become possible an entire new body to be built and attacjed to your head.
Andfinally, if you have only the brain, then you will have to wait for the science to be able to build an entire new body arround the brain.
I advise you all cryonicists to preserve yourself with the entire body.