[joaq]

So what if someone's more intelligent? There was an experiment showing that super smart people don't have much of an advantage over smart people. Past a certain point it doesn't matter.

Most other human attributes that we perceive as desirable like height have their downsides (every extra centimeter takes 3 months away from your life plus many other health problems).

I see the opportunity more along the lines of removing health problems such as schizophrenia, etc.