It's a very interesting demo. In terms of lewd scenes it's top notch (aside from writing, but that's my preference cause I love it when narrator describes actions that are happening in scenes in detail, but with CGs doing a lot of heavy lifting, don't think it's too necessary to change that approach). Can't wait to see more of it developed. But I could also give a couple of suggestions for future scenes that might be implemented:
1) A farm could be fun. Quite obvious what would happen in here, from milking to breeding to brainwashing with losing the ability to speak.
2) Mayoress branching path where MC could try to take her power and in the process become the new Mayoress(amazonian transformation, that kinda thing)
3) Could take a note from one of Night of Revenge gameover scenes where Aradia loses to a certain enemy and becomes a part of the enemy ecosystem(kinda like fleshwall end but less... Wally, I guess.)
4) With the setting being a game, perhaps MC could stumble upon the casino type establishment where she could gamble her freedom away for benefits, with the more her going into debt, the more she becomes a part of the establishment. Maybe can even have her become a game in the casino as a bad end where the patrons gamble to see who can impregnate her first.
5) A slave auction kinda thing where MC can try to protest the concept of slavery and be enslaved herself or just sell herself into slavery for profit, which in turn can lead to other possible bad ends related to already established characters in game (Mayress's pet/etc) or perhaps lead to new ones. Maybe can even make side mission levels with MC working for the slave auction, platforming through levels trying to capture escaped slaves.
6) With golems already existing in the game, perhaps a more mechanical approach to lewdness could be welcome, with MC being turned into an automaton against her will (either a sexbot kinda thing or a defense system automaton that captures survivors and brings them for processing)
7) Next idea could clash very much with the setting of the game, but perhaps oriental style prostitution path could be quite enjoyable with MC becoming a geisha type courtesan instead of the standard bimbo whore, though the latter approach can also be done quite well with bad end easily imaginable.
8) Cursed artifacts are always lovely to see in corruption/transformation kinds of games. Perhaps a mask that once worn grants some great abilities but becomes harder and harder to take off as it brainwashes the wearer before becoming wearer's new true face and taking control over them completely.
9) Perhaps MC could find a book filled with Eldritch knowledge, open it and start being brainwashed into becoming the priestess of an elder god and starting her own cult by using her body as a reward for good service for the members? Or something along those lines.
Those are just ideas for a possible scenes. Also please... controls are way too poor for platforming... (Tho for the first attempt it's quite impressive) Oh and another issue I noticed is that I kept on forgetting the buttons needed for certain interactions (like slide, dash, interact with something...). Perhaps little images on the screen with button keys that show the image of what can be done from basic actions could be nice to see, as in, G to slide with the keyboard key button for the slide key always visible on the screen with a lil image showing the action. If go in that direction, could also mess around with images on screen during lewd events where the possible actions are replaced with lewd prompts like obey, serve, etc. Could be fun to see that kinda thing in the Mayoress path where MC tries to escape from the mansion but even her controls are working against her and being rewritten due to hypnosis.