yes yes yes it's such a pity that it's such a niche!!! it's such a nice realistic + drastic take on a society with abilities. have you read the translated novel? it's written from saki's viewpoint where she's like some pseudo historian -- she uses a whole page to tell you about the cow sacs (like the anime) and what they did to the human rights convention (...in regards to children ;v;) etc etc etc all very 'scientific-ish' in their point of view, which really immerses the reader. 

it gives me so much museeee.

i also shamelessly vibe to the choir osts ^q^

(i think the next similar work is 'harmony' by project itoh if you're interested! though it might fall flat according to some, the vibes and themes were similar ish in the sense that it's a utopia, but something is also terribly wrong. also love the way it's written -- very in-world, immersive. moody-depressive haha.)