The quality or condition of being notorious; ill fame.
Example of use in context: The Alcor Life Extension Foundation gained considerable notoriety from their cryopreservation of Ted Williams, and in the years since, their Executive Board continues to refuse to promise they will never again provide unfunded services for "celebrities" or other persons.
You may have mischosen that word, but you were uncannily right on (except for the part that we need more notoriety, which obviously we do not).
As to the idea that the wealthy and famous are unaware of cryonics, and if told about it would beat down the organizations' doors, I think you might be mistaken. Robert Ettinger if I recall correctly has a story or two to tell about his efforts in trying to get them on board. email@example.com .
As to the idea that we even need more people signed up for cryonics, I am not sure if we do. When we have a real product to offer, that is proven to work, that will be the time to promote it, and people will prove out the "build it and they will come" principle. For now, we are still in a highly experimental alpha stage, and everyone who is signed up or thinking of being should fully understand it is a very chancy thing as to it ever working out for them to be successfully resuscitated, repaired, and cured. There are probably too many in the current "movement" who do not fully understand that, but should.