Are these still open? I know you said no one is interested in a multiple-female Harem RP, but with a steady enough plot I definitely could give it ago -- and it can be darker or fluffier smut depending on the occasion (or even a mixture).
Open to fantasy or modern settings though I have an itch for fantasy. Maybe MC(s) are a group of mercenaries hired to protect YC, or are the different women of a royal kingdom (shenanigans with affairs and varying dynamics) depending if YC is royalty or a servant), that type of thing. Can make it more adventurous too with other outlying plot devices. Let me know if you want to brainstorm more! I've done multi-character RP before and am always down to bring in different archetypes and have them interact with each other.