"Scientists are also exploring the role of genes in setting the range of personality traits a person can develop. "
Of course, from here, compulsory gene design of babies is the next "logical" step -- to make sure there will be the right number of people with the appropriate traits, to fill the future job market.
Maybe they won't need to design Genes. They will just select out the undesirables, they will starve to death, and the Pool will slowly gravitate to the desired complement. Science imitating nature perhaps. Something right out of Hitler's plans for the Master Race. Scary.