For family medical history: you just get the guy to sign a contract that should he ever be diagnosed with any heritable diseases he must contact the sprem bank, who can then contact anyone who might be affected. Preserves anonymity while giving the required information.
IMO it is only ethical to allow different women with the same donor to meet if they go through the clinic and have requested to meet other women with children by the same donor.
Still, really, if you wanted to give your kids lots of half brothers and sisters and various “aunties”- I think you want to think about polygamy, not a sperm bank. I believe that there’s a town in Utah which can accommodate you.
I wouldnt be surprised that sometime down the line he goes missing and it is finally discovered that these 11 scary women kidnapped him and they all moved into some compound and were using him as the worship object of an impregnantion cult …
He should just stop donating … or change companies he donates [sells?] to …
Wasn’t there a scandal in the papers a few years ago about a doctor working in an fertility clinic who impregnated dozens of women with his seed, without their knowledge?