Cryonics simply assumes the eventual development of molecular nano-technology per Drexler is able to repair both the freezing damage and any medical problems too. Not at all unlikely in a few decades, and almost certain within a century.
As for who would want you back ... your children, hopefully. And if there's no repair before they die ... hopefully their children would want them back. Etc.
As for who would want you back ... your children, hopefully. And if there's no repair before they die ... hopefully their children would want them back. Etc.