Don't get me wrong, I absolutely LOVE the embryo feature, but after years of it being shot down and it being explicitly stated that it's never going to happen, why did it?

I think what happened is that Eve may have said no the first time it was suggested so from then on everyone assumed it was a forever no so it was shot down every time someone new suggested it. I believe I saw Eve say somewhere when embryos were implemented that she never actually had ever said a hard no but members were policing each other whenever it was brought up because "no embryos" are listed under the "do not suggest" in the suggestions forum.