I really like the newest character, Venefica. Getting to talk to her and getting her opinions on the other females around the map was interesting, as it's cool to know that all the girls are familiar and seemingly friendly with each other rather than being complete strangers. Mostly, it's interesting to meet a character now who can disable the recall stone which I always thought was a device that ruined any possibility for the character to be enslaved since he'll just be teleported back to the church whenever he is in danger of such. I feel like some women having such a power to disable the recall stone could be something you can expand on with future enemies now that it's been demonstrated as a possibility. Seems like plenty of females in this universe would want to have a power like that to keep a character as her pet forever, although I realize consensual sex and servitude is a big thing in this game.
Either way, maybe there could be a character which does disable or even redirects the recall stone to teleport back to her location rather than the church until maybe you beg to have it fixed and need to do something in exchange, or perhaps ask Elly, should the player get tired of the relationship. Additionally, maybe some other NPCs (like Nara) can have some special dialogue and scenes if you encounter her or challenge her while having Venefica's candy in your inventory, since Nara is apparently a frequent customer from my understanding. This would be a cool way to add some extra, bonus content to older, seemingly forgotten characters. That, or perhaps you'll even find characters like Nara browsing Venefica's shop. Lots of potential. For example, choosing to lie and tell Venefica that you discovered her candy shop because of Nara instead of Elly, you'll eventually find Nara being scolded inside the shop or even at the mountains by Venefica, to which Nara will angrily fight the PC or something, while using the candy as a buff. Ideally, losing to her would give a brand new sex scene.