i would say it is a bad idea to have the future of human evolution dictated by a bunch of idolatrizing heathens.
Come on, heathens? This just reality, some will say " I want my child to be dumber, slower, weaker, have a shorter life-span, etc... after all God made him that way!!!", others will say "well, this reproduction is given by nature, I don't care if some have to suffer and die because of it, it's my right of imposition upon new minds", now we can't have that, now can we? No we cannot, just as we can't have parents denying their child education, medical assistance, adequate nutrition, etc. due to some G0d forsaken belief, or the like. As for the reasons and benefits of change...
First of, it can stop accidental pregnancies, and it'll likely be for the better both for the new born, and for the parents. Allowing them to be financially, and emotionally ready for the child. The child will in turn receive an environment with proper financial and emotional support.
Second, we can stop people with histories of child abuse, negligence, and the like from easily gaining another victim, requiring them to get a social evaluation.
Third, we can control the overpopulation problem, as mortality drops down to virtually zero, lifespan increases dramatically, and automatization eases the hurdles of raising a child, this coud become a significant concern.
Fourth, the crime rate, we can virtually eliminate crime(murder, theft, child abuse, rape, etc.), with excellent genes, and an excellent environment, I mean we've pretty much wiped the slate clean.
Fifth, the rights that are ignored, we can guarantee the rights to life, to freedom, to happiness, to those who do not presently have them warranted. That is the real world, akin to a poker game, where you might get an excellent hand "good parents, environment and genes", some what less, or a really fkced up hand "let your imagination run wild". A child is defenseless against his parents, and depending on the parents, he might very well become a victim... all his rights thus are in a state of jeopardy, we can end this, and guarantee his rights, to proper education, to mental health, to life, to freedom, and to happiness.
And we could go on and on, as that's just the peak of the iceberg. The repercussions go all over the social sphere, and if done properly at a global level... it would put an end to a lot of problems, and it would bring forth many new good nougat like things...