Do you want the wrath of Khan because this is how you get the wrath of Khan.
On a serious note, using tech like this humans could edit out most forms of congenital anomalies, and cancers too. Edit in higher IQ for sure as that trait in innate. Want type O blood for all so it’s all universally accepted yup that too, which means every organ would swap as well if you code in the right RH factors. Want blue eyes or green yup easy peasy once you start CRISPR tech to the 23 and me groups. Want humans to be able to digest cellulose that can be coded in as well we still have a vestigial hindgut the appendix use DNA edits to turn it back on it would allow human’s to eat 3/4 of all plant materials on earth for food drastically improving food security and allowing tens of billions of humans to flourish. The possibilities are endless once you have full control of those genes.
I want a prehensile tail................