It's interesting. We actually can't edit for complex traits like intelligence or schizophrenia at present because they seem to be deeply polygenic and Chabris has basically led us to stop identifying specific genes and their mechanisms. This means that we know genes play some role in schizophrenia but have no idea what it is the genes are doing. Consider for example a gene that makes mothers less affectionate with their children. GWASs and the like pick this up as genetic causation of schizophrenia, and maybe editing that gene is even a good thing, however it's not really what we think of when we think of 'genetic causation of schizophrenia.' Even something like height, a gene that makes your joints marginally larger will have a small effect on your height and get picked up. However, would it actually be beneficial to give your kid bigger joints so that they're a bit taller?
So then we're basically restricted to curing simple diseases where specific genetic causes are already identified. Or are we? It seems to me the real risk is not from rich people engineering smarter babies, it's a company who says they can genetically engineer a smarter baby but mostly just tinker around with inconsequential traits. Then we get an 'uber race' of people who believe that they are elite in essence, immutably so, when actually they're not that different. Like the racism of old.