Back to the topic, this is actually awesome. I'm going to guess there are a lot of people who are going to be against it. This can cause problems like overpopulation.
Let's say that this thing becomes publicly available right now, how many people would there be on the Earth in 900 years (if there are no major catastrophes or anything)?
There would have to be some kind of restrictions or something unless people want serial killers to get out of prison after 5 life sentences (if they're still 100 years?).
I see what you mean but the thing is that infos are lost. What is it worth if your brain is changed or damaged so far that you are like a child or something. And that only if they can heal the damage. Cells are broken and neurons damaged. And lost infos in there cant possibly be recreated since the info is nowhere stored.
So as long as they dont find a way to store the personality or develop time travel... it wont work i think.
We need to define what consciousness is first. Then find a way to copy it. Then find a way to transfer it. Then keeping someone's body in ice would be futile.
The most important part of "consciousness" is memory, without memory then you'd have no idea who you are, past experiences, and the like. Cryogenics at this point isn't that promising because of the degradation that occurs to the cells, but there are many other fields which are very likely(and already have had) to have huge advances in human longevity; organ transplants, bionanotechnology, bio-mechanical parts, stem cells etc.