[hyperpallium]

There could be concern of breeding/creating a superrace by the rich, but historically people select for superficial traits - what is fashionable - as they do in dog-breeding. Or over-selecting for some narrow performance characteristic, as in racehorses.

It seems to me the just way is similar to how bread is legally required to be fortified with vitamins to avoid e.g. rickets. And how education is legally required. Beyond these community accepted minimums, knock yourself out.