I continue to support the idea of a Diaper Lover room or floor... I know someone else agreed with me.
On the one hand, diapers are almost universally-reviled as a fetish (AND as a comedic gag) both IRL and online, but on the other hand the game's built to probably eventually include basically every fetish at some point, so, uh, I wouldn't be that surprised if it eventually made it in, alongside a negative floor based on watersports and scat or something, IDK, yuck.
Hell, one of the first floors of the game is based on feet, which isn't anywhere near as hated, but still a fairly no-no fetish, and the whole game has a strong emphasis on futa, which is now a "socially unacceptable" kink thanks to weirdos on Twitter turning futa into a derogatory term about trans people.
Realtalk I'm not joking when I say I wouldn't be that surprised if there was eventually a snuff floor or a vore floor or something.
My own personal wish for an eventual floor might be an expansion floor or a surgical floor, either with literal air/helium/water pumps filling boobs and butts and bellies or whatever, or just a surgical vibe to the same concept, ranging from big breast implants to artificial pregnancies to, I don't know, robot limbs or something.
Kinda on that note, it could be fun if there was eventually a gynoid/robot floor, and the special unlockable there is a customizable robo-waifu that you can fuck, be fucked by, or invite to threesomes. IDK.