I've got several ponderings! I thought they would be cool possible ideas for future chapters.
One idea I am thinking are corrupted healing items, healing items that you may (or have to) use to stay in combat, but will raise your lust/corruption/submission level or some other (fun) side effects.
Another idea I have is like a second-wind in slut mode. If you become a professional slut (a possible implementation is like collecting all transferable accessories from each chapter which you get from slut mode), you would probably have much more control over your own lust and who can control you. So you can like, snap out of your max lust for a limited amount of time to stay in the fight. This is possibly a difficult thing to bring together though.
Another thing I thought would be cool with professional slut is possibly a new character that would accept and romantically love Mezz for going down that path. If Scratch is the type that won't accept a professional slut (sex worker) as a partner, there is at least some comfort left for Mezz in the end, unless Scratch is just gonna be that amazing. On the flip side, Mezz as a professional slut can have a horrifying slut mode win, that makes you wonder if you even won at all, giving the slutty players a reality check (cool idea but I legit will hate you forever for this) (well not seriously but still).
Just some fun suggestions for the future! Maybe they could come in useful and get implemented if they complement your grand scheme for the next chapters! The corrupted healing item idea is just a thing I think plays well with the emotions I felt playing your game, "punishing" poor resource management in a different way. The professional slut however is something i heard several accounts of, and have some personal experience with it ^w^