Genetic modifications will go beyond human traits and variances relatively soon after they become available with relative safety. There is no reason people will not choose e.g. memory-enhancing modifications or huge life-extending ones. It will only take a few first experiments to have a new global "arms race". The fear of loss of power will easily silence most ethical concerns. In that respect western countries seem to have locked in the best scientists for that. There is no doubt that it will be a pivotal moment in the history of the human race (and probably the end of it)