I have always had a soft spot for this game, it's been developed for years and is now a pretty sizeable game.
I feel that the earlier animations and renders kind of let it down a little now - you can see jumps in quality as Votan is getting more skilled and experienced in the more recent versions. Also after the amount of development time this game has had, you would expect the quality to be higher. But hey - perhaps not if this is just a moonlighting dev with a day job or something.
I hate to be that guy... but I almost feel like this game should be finished up and a new project started, or (cursed words incoming) a remake which goes back and increases quality. There is a relatively good amount of content here. Or at least some quality of life improvements like perhaps working through making the quest and progression a little more structured and logical. At the moment spending 3 hours running step by step through some readme file telling me the weird combination of events that are required to unlock new content just does not do it for me.
Other than that... if the dev is not interested in going back and re-producing content at a higher quality and some quality of life improvements there is really capacity here for someone with more talent with renders and animating, storytelling and a mind for a progression system... to simply take the story, improve it, and build something new. This isn't an original story, Ring of Lust wasn't the first.... Milf's Control by ICSTOR (ugh, he who shall not be named) was out in 2016, who knows who explored this type of story earlier than that before then...
Anyway, just my humble opinion. Again, I have always had a soft spot for this game and I like it. The kind of unpolished quality to it... and the story itself - maybe it's just me being nostalgic but the earlier ICSTOR games were the first games that I actually found online, Ring of Lust being one of the first outside of that scope that I played... and was one of the reasons I even found F95zone in the first place.