Freezing bodies

In the United States, there is a phenomenon (probably still small) of freezing bodies. Some freeze the entire body, and some freeze only the brain. The goal is to preserve the body from decay, so that if one day medicine can cure it (for example, to print a heart in place of the one that collapsed, or to freeze the brain – to print an entire body) – the person will come back to life.
Several questions –
A. Does the Halacha allow this? Ostensibly, the Halacha is that those who die – are buried. But here it seems that the person chooses not to see himself as dead (and perhaps the mere knowledge that one day such a technological possibility will change the concept of death in the eyes of man and humanity), so it is possible that this law does not apply to him. Moreover, the Halacha criterion for death is learned from the Halacha regarding who controls the wave – which is essentially equivalent to whether it is possible to be brought back to life.
on. If we assume that freezing bodies changes the person's status and he is not as important as dead – will this have an impact on inheritance laws (assuming he dies without deciding what to do with his property), on his widowed wife(?)?
third. It is known that a person who sleeps is included in the minyan. The question is whether such a person also (and it seems that this depends on whether the reason for adding a person who sleeps is "every one of the ten who is in the presence of the Divine Presence" or "everyone worthy of spending time" in the sense that he can wake up and answer – Mashak here)