I would expect this to be the tip of the iceberg in regards to serious genetic hacking. Modify your own genome and wait for your body to heal itself? ... Sound

I would expect this to be the tip of the iceberg in regards to serious genetic hacking. Modify your own genome and wait for your body to heal itself? ... Sounds kind of risky and frightening! Have your heart or liver transplant source one that's 5/10/15% "better" (in function, endurance, etc)? Well, you already needed a new one...