Nice game! I do have some suggestions though
1. if we get a court jester maybe they can mix around with some of Annette's potions and create new ones
2. an area to enter Annette's workshop and ask her for certain potions
3. with the ability to get any potion, you can put some growth potion in the water supplies
4. perhaps being able to catch a peasant stealing in the courtyard and punishing them by either stuffing them or getting Erica to vore them