Bought the game to support you Richard. Hope you're living happy times with your wife despite the financial hurt.
I like the gym scenario (is the cupboard ending really realistic, in your experience?). The interface to explore missed branches of each scenario and do custom playthroughs is pretty badass. Game crashes when trying to show results though, but still unlocks the next video, so meh I guess it's ok.
I'd like to see something a LOT lower-budget but with tons more dialogue, more player agency and replayability from you, something like those RenPy sandbox erotic dating sims (see: Holiday Island by Darkhound on Patreon) but with realistic Game and no stats grind. Overall serious tone but players would get to experience the fruit of their labor in full this time ;) .
It would follow a "two weeks in a foreign city" kind of scenario, go for a girlfriend or for maximum notches, and some girl moods and events are randomized.
AFAIK none of those dating sims have even remotely realistic game so there's a niche to fill.
Graphics-wise static renders like the classic Pandora would work well https://web.archive.org/web/20210916162905/http://www.mortzeart.com/?page_id=21 [adult content], or also drawings like in the Japanese eroge Princess Evangile.
Some of these VNs also have rather good sex animations, not sure how they're done: https://caribdis.itch.io/once-in-a-lifetime [adult content]). BTW I know nothing about the business side, but some creators like this one have close to 7000 Patreon subs