Envision every human as equal at birth; in beauty, health, mental health, social strength and intelligence. A designed evolutionary system with goals and planning would provide all of these for every human. Only then can a truly egalitarian society be obtained.
It is natural (ethical, moral, expected) behavior for the human species to modify natural processes to its advantage. As the human species learns more and more about the genetic structure of the human, and its implications in form and culture, it will apply that knowledge (make use of it). To do so is in the nature of the human. Mistakes will be made. That, also, is human. Some will use that knowledge to take unfair advantage of others. That, also, is human. The human will then learn from and overcome from those mistakes and take steps to continuously perfect the application. That, also, is human.
The first requirement for any application of genetic knowledge to the welfare and survival of the species is that each such application be technically justified beforehand. This requires that the application be pretested for validity and tested for adverse side effects. It must then be shown to have a provable net positive effect, with adequate safety margins.
The second requirement for any application of genetic knowledge to the welfare and survival of the species is that each such application be morally and ethically justified beforehand. This requires that the application be pretested for its inherent morality and all social side effects to be evaluated. It must then be shown to have a provable net positive morality, with adequate safety margins. Only then may it be applied.