I have some suggestions for the game.
1. Titjobs. Why aren't there any? All you can do is rub against the tits. Perfect for lvl3.
2. Biting/Hickeys. Whole new unlock tree.
3. Upgrades for the dex to show dangerous days.
4. Upgrade xray to show fertilization.
5. Aphrodisiac. Maybe skip lvl 1 or 2. Or just enable stripping in lvl 1.