> genetic diversity?

Partially, yes. I know a scientist in one of Denver's clinics specializing in reproductive health.

They do not allow more than 25 descendants per man per country, and do not allow more than 100 globally. Yes, they do export the material to many countries, including developed ones, such as the UK.

The law about inheriting frozen material from a deceased partner is also widely outdated in many jurisdictions around the globe. In many countries even the legal wife cannot inherit it without active consent, which cannot be given posthumously for obvious reasons.