Assuming we would fully understand what we do, so that we could do it without negative side effects, these are obvious in my opinion:
health;
longevity;
higher IQ.
All three would have positive impact on economy (assuming that “longevity” means more productive years, i.e. the middle age gets longer, not the old age), so the individual incentives would be nicely aligned with the social ones.
Assuming we would fully understand what we do, so that we could do it without negative side effects, these are obvious in my opinion:
health;
longevity;
higher IQ.
All three would have positive impact on economy (assuming that “longevity” means more productive years, i.e. the middle age gets longer, not the old age), so the individual incentives would be nicely aligned with the social ones.