If you are going for max survival of the species then we should have a section of the government hand selecting high value people to breed with one another. We would still have regular people procreating as we need the variety. It just takes so long to breed humans. They did a study where they took wild foxes and it took 50 years or like 30 generations to breed out the wild in them and make them into domesticated pets. This would take several hundred years for mankind to breed ourselves. I personally am betting we will merge with robots in the next 200-300 years way before the breeding would be valuable.