I know your roleswap post was probably made a while ago but I understand what you mean!! Not enough people truly explore the concept of a full swap! I have my own roleswap au in the works and it's kinda funny seeing only like 4 other people do a similar concept rather then just switching nezuko and tanjiro.
Yeah! I know that hcs-on-the-loose, vynomii, yyuusart and saphirune all have similar roleswap aus, but it’s kinda disappointing that total roleswap aus for Kny are rare? I wrote two complete roleswap fics on AO3 (Deadliest Insect & Eat to Your Heart’s Content, and I’m working on a third called Moon Festival) for a larger story I want tell, but I wish there was more content for this kind of roleswap?