I am not against efforts at positive eugenics. You will find this described on Wikipedia and in various places besides; I know I didn't first encounter the term online.
The difference between positive and negative eugenics is fairly straightforward. Positive eugenics involves seeking to increase fertility in 'worthy' sorts. Negative eugenics involves seeking to decrease fertility in 'unworthy' sorts. To me, the difference is stark.
Negative eugenics has a nasty history, including such terrors as blaming the victim in cases of incestual rape, and sounds like a recipe for racism, class warfare, and all manner of evils besides. What's more, it eliminates diversity in the gene pool. Why bother doing that? I don't see a lot of benefit to it.
Positive eugenics denies nobody a right to breed, denies nobody fundamental rights if done casually and through incentives, and maintains the diversity in the gene pool as well as allowing humans to do what we do reasonably often: surprise ourselves. Simply, positive eugenics keeps options open, while negative eugenics closes them.
That said, positive eugenics can be done wrong as well, as it could potentially involve the aggressive pursuit of genetic material from donors, perhaps posthumous, who had no intention for philosophical/religious/political reasons of breeding or having these samples taken, and if a matter of requirement rather than encouragement is not only morally dubious (and a bit rude) but also somewhat cruel.
If nothing else, for no sound reasons, I would want to take some responsibility for any of my progeny.
Anyway, even with this little difference in mind, I'm still not sure how I feel about projects to make the Howard Families. (R. A. Heinlein, biyatches.) Anything can be done wrong, and some things have enough potential to go poorly that they're best left undone.
Caveat 1: This post will be lost in what is already 9 pages of replies.
Caveat 2: It will be lost because I don't expect anybody else to do what I refused to do, namely read 9 pages of replies.