we have already identified several thousand possible DNA alleles that we can modify to our benefit. We could modify the GRIN2B (
https://www.ncbi.nlm.nih.gov/pubmed/19838302), the PDE4B (
https://www.ncbi.nlm.nih.gov/pubmed/?term=26272049),
https://www.ncbi.nlm.nih.gov/pubmed/25225386 and the FOXP2 strain (
https://www.ncbi.nlm.nih.gov/pubmed/19838302) to help our children to have more potential. Add modifications with TP53, CDKN2A, CTNNB1, NGF, MSTN, EPOR and APOE genes, and you got the basis for a healthy, fit and smart child. But it is true, that we need some 10 - 20 years to test it out, but as CRISPR is progressing and computer can simulate biological process ever better, I could imagine that in 20-30 years, genetic modifications might be viable to support your child to not to have to worry about many issues we have to carry around.
Accurate prediction of height from genome has already been accomplished, identifying 10k positively associated loci (
https://www.biorxiv.org/content/biorxiv/early/2017/09/18/190124.full.pdf). The genetic architecture of intelligence is similar to that of height (
https://arxiv.org/pdf/1408.3421.pdf). It is only a matter of time before enough genotype-phenotype pairs are collected to perform a similar analysis on cognitive ability, and identify the estimated 10k SNPs that explain the variance in IQ. After these are identified, an optimized genotype could be discovered and implemented in human embryos via genetic engineering, although the technology here will also have to advance to be able to edit 10k loci reliably.
