I have a two ideas that can add to the game.
One is to add a base, camp, or town for the harpy thieves (I can't think of a name), to unlock this area afar you got Zhara pregnant and she gave birth and you did the kiddo visit, 30 days or more later one of the night visits she tells you the local of the area because the Harpy Matron order her to tell you. There you can talk to the Harpy Matron because she wants you to get her and other harpy characters pregnant (people and the game creators can add the other harpy characters) and you get Zhara pregnant again as will, you can say yes, no, or other options (people and the game creators can add the other options). If say no she and the other harpy will fight loss to them is a bad ending, win you can stall get her pregnant but you can't revisit the area because the harpies change the local of there base or camp. If you say yes, you get the Harpy Matron and the other characters pregnant and you can revisit the places again to talk to the Harpy Matron, Zhara, and other harpy characters (people and the game creators can add the options because I'm not sure what to add), and you can ask the Harpy Matron if you can have Zhara as a companion. People can add other content if they went to.
Two is to add a camp/base for Byvernia, you unlock this place afar you get Byvernia pregnant 5 times, ones that happens you need to leave and reenter Foothills and when you encounter Byvernia again and bet her again, she will give you the local. When you first get there you see the walls, gate, a storage build, 3 pins with wyvern girls in them, and a main build (people and the game creators can add more details) she will ask for some help to make her camp/base safer for the kids and you will have to get 20 or more pristine wood, 20 or more sturdy stone, and 20 or more broken metal parts (the game creator can decide the amount), ones you do that you can talk to her, here are the some options, you can spare her, talk about the kids, breed her again, to go out to capture more wyvern girls, add new builds and upgrade different parts of the camp/base (people and the game creators can more options). The new builds you can add are a play area the the kids, training grounds, add more pins for the more wyvern girls, and with the people of Lady Evergreen you can get a Waystone Idol build in Byvernia camp/base (people and the game creator can more options). The parts of the camp/base you can upgrade are the walls that surround the camp/base, the play area, training grounds, storage build, the main build, and the pins for the wyvern girls (people and the game creators can more options and the game creators can decide how many times you can upgrade them). There are 3 pins, the second and third pins has 4 normal wyvern girls each, but the first pin has 4 unique wyvern girls, the first wyvern girl has cow-like hips and colossal ass that sway and wobbling hypnotically and small breasts, the second wyvern girl as normal size hips and ass, but her breast are as big as the first wyvern hips and ass, the third wyvern girl has cow-like hips and colossal ass that sway and wobbling hypnotically and massive breast to match, and the fourth wyvern girl is like the third one but bigger and as different colors. The player can also go into the pins to get to wyvern girls pregnant.