What you are advocating has been done before and it is evil.
reproductive fitness is just a formalized study of what is reproductively healthy, and what isnt.
It is nothing more than eugenics relabeled.
Likewise, the inability to maintain long term male-female reproductive relationships, observable in the high divorce rate and multiple generations of dysfunctional latch-key children, is UNHEALTHY.
Here comes the selective breeding.
There is a plethora of reproductively related behaviors which have contributed to the loss of the cultural war, and the accelerated destruction of this nations moral (and financial) infrastructures....
We've heard this before.
Or havent you noticed that sex sells?
You're pushing evil.
Romans 1:18
For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened. 22Although they claimed to be wise, they became fools 23and exchanged the glory of the immortal God for images made to look like mortal man and birds and animals and reptiles.
24Therefore God gave them over in the sinful desires of their hearts to sexual impurity for the degrading of their bodies with one another. 25They exchanged the truth of God for a lie, and worshiped and served created things rather than the Creatorwho is forever praised. Amen.
Rom 1:25-28
25 They exchanged the truth of God for a lie, and worshiped and served created things rather than the Creator who is forever praised. Amen.26 Because of this, God gave them over to shameful lusts. Even their women exchanged natural relations for unnatural ones. 27 In the same way the men also abandoned natural relations with women and were inflamed with lust for one another. Men committed indecent acts with other men, and received in themselves the due penalty for their perversion.28 Furthermore, since they did not think it worthwhile to retain the knowledge of God, he gave them over to a depraved mind, to do what ought not to be done.
NIV