RE: Eugenics is ethical.

Interesting reading.
The issue is more complicated than your optimistic hypothesis.

Who has the power & their motivations needs to be considered.
There may be unforeseen outcomes down the road that may make the human species vulnerable.
What we value as "intelligent, attractive and strong than us" today, may create concerns in the future.
It may seem advantageous on the surface - there are many layers to humanity that we may "delete" one thing that could be beneficial to the human journey.

It will definately be a very relevant topic as the keys to DNA tampering are now more readily accessible, with "garage shop" kits that can be purchased.

Thanks for writing the article.