Combining the husband and wife's reproductive cells to produce 1000 embryos and then selecting the 'best' embryo for implantation. The other embryos are discarded.

Using a computer program to discover the 'best' combination of the husband and wife's genes then creating 1 embryo containing this DNA

Combining one of the wife's eggs with one of the husband's sperm and then using a gene editing tool like CRISPR to insert known genes that increase intelligence, strength etc. CRISPR is also used to repair any random genetic diseases the couple might have passed on by chance.