A point I haven’t seen yet is just general eugenics. I know OP says “no appearance or mind” but genetic diseases directly affect those. Take deafness, for example. It can be genetic and therefore could be “fixed.” The deaf community would be fucking furious (cochlear implants can be incredibly controversial). Blindness can also be genetic. Cleft lips and club feet can be genetic (or influenced by) and they can be really gnarly so why wouldn’t we fix those? And since we’re fixing things, why not fix autism and Down’s syndrome (I know we said no mind but those are truly game changers!) and oh shit now we’re in Gattaca. Eugenics is bad. I won’t fully commit to a slippery slope because that’s a fallacy; I will say very convincing science fiction has been written about this and I have seen nothing under capitalism (or communism!) that convinces me that wouldn’t happen.