If I had to put this in general terms beyond this dev only, I would ask: can a fetish really become a story according to the rules of classical storytelling or is it damned to remain a repetitive series of moments, of practices, of positions? Can it be transformed into it without losing its fetish-character?
Because you can sense the fetish-character of his stories all the time, e.g. when he repeats certain sentences again in different games or the type of woman, you can see a progression there, his imagination works on the same type over time (exception pineapple express).
You can have different setups, that evoke different reasonings for the FMC in question.
Sharing my Fiancee: IIRC, the FMC had no other sexual experience other than with MC - inexperienced shy girl on the verge of promising herself to one man only? Gold.
Pineapple Express: In trying to keep up a ruse to save a friends dignity, the FMC discovers something new about her relationship and sexuality? Gold.
Exploring the Big Apple: the FMC is "forced" to share an apartment with an older, but hunky gentleman. As the couple decides to experiment, tensions arise until the boiling point is reached - and a final decision is made. Gold.
See? Last three games all had different premises, and as such, should have a different enough experience and method to the madness.
The endings are the only thing I might argue are largely the same, there's only so many ways these situations can end - but Dimajio never properly explored any so far. They all end
too fast, and don't dive deeper into the psychology of the MC or the FMC on any given ending.