Would you innovate your own genome?
Sure the science is already there, you can add or remove some features.
This can be so much fun!
Add more iron to your blood and cells so you can hold your breath for 10 minutes! Increase your retina's rod cells number so you can better see at night!
This is fun until it's not and you fuck up some systems you weren't thinking about which are intertwined with the things you messed with.
The point is, dont mess with a working system unless absolutely have to.