Hi there, that's a whole lot.
In short I may add some new content to old stories, but probably not much. I am adding endings to some characters (the big Abby ending coming in a few weeks probably, for example), but I don't think I'll add new scenes/photos to what's already been done.
For the specific types of content you want: the AI model I use can't do pegging. If I find a good LoRA that can produce it then I may start adding more. But it's not something I'm personally super interested in so I haven't put in a ton of effort into it.
For threesomes, the answer is entirely technical. It is notoriously extremely difficult to generate an image with two girls with consistent/specific characteristics within the same image. It's possible, but takes much, much more work and effort than a solo image or a scene with with a faceless man.
I'll check the filenames too, thanks! I may have some mix-ups in there.
All of the recipes are in the Advanced Help section of the game.
The Sabrina/chastity belt thing was just meant to be dirty talk, but I may add a photo or two in the future with that, as it's not difficult to make female chastity belt photos in the image model I use.
And for inventory: it'd break the game if I let you port over items from one loop to the other, as a lot of items (I'm specifically thinking of Emi's hypnosis tracks) would break the quest/progression order.