Before coming to my senses, I used to be a law student. Trusts, including estates, was probably my favourite subject. The main vehicle for transmitting wealth between generations is trusts, because they are reliable and well-understood.
However, in Australia, and other common-law countries such as the UK, Canada and the USA, trusts have a limited life-time. The basic principle is that the dead cannot rule the living. It's called the "rule against perpetuities". If trusts could last forever, more and more of the world's resources would be tied up in trusts with narrow aims and the eventually all the world would be divided between trustees and beneficiaries. So goes the argument, anyhow (this is different from conditional gifts and foundations, by the way, before you start yammering about scholarships and charitable organisations).
The lifetime of a trust is specified at its creation. In the old days you could make it $DEATH_DATE_OF_SOMEONE + 21 years. So you'd have stuff like "For the life of the Prince of Wales and 21 years", the theory being that it's easy to know when the Prince of Wales carks it. More recently, most jurisdictions have introduced legislation allowing an optional ability to simply fix some time period, usually up to 80 years.
And that's the problem. If you go into cryo-storage for 81 years, then on awakening you may find that your trust was dissolved and the benefits distributed to your descendants. And until it's proved that you can really come back from death via cryogenic storage, I'd be amazed if the courts changed their stance. Because too many people would try to break the rule against perpetuities by being "frozen".
Of course, IANAL, this isn't legal advice, YMMV yadda yadda.