The Gattaca premise sounds pretty logical but not unexpected. Presumably they will optimize for what they might view to be "favorable" genes associated with preferred traits (skin/hair/eye color, beauty/symmetry, strength, height, intelligence, disease resistance, aggression, etc.) while attempting to eliminate the others.

This will (possibly) convey an increased "genetic" advantage upon the wealthy and privileged, while reinforcing societal structures that punish and exploit those who haven't been engineered the same way.