That's fair. I did like your idea about queuing up to enter the vault and having to fill in certain forms. I guess with cryogenics that would at least allow for a variety of character types, rather than specific people being required for the social experiment (such as was done with Vault 15). It would be fun if you found documents on various people, including yourself, and explaining why they didn't survive the cryogenic process while you did. An Intelligence 2 character for example: "Most of our subjects suffered severe brain damage from overlong containment, but it looks like this guy didn't have any brains to damage to begin with."