Not sure if this is a bug or not, but the nun seems to have the same personality as the princess later during the corruption process, or at least share the same lines, not sure if this was a bug or just a shortcut to get something in place before releasing the rest of the updates.
And since you seem to be open to suggestions...
Please remove the PC's head when in first person, it is extremely jarring to go from a standard BJ to a surprise Vore scene.
Let the player choose where to cum (internal/external but aiming would be fun), should be really easy to implement and can be based on position when you cum so you don't have to do a bunch of new animations.
Would be nice but require a bit more to it, have the actions during the sex scenes matter to the girl. For example come into the scene and immediately cum would piss her off or not based on her personality or worse getting her right on edge then exiting the scene with neither person finishing and have her remember it next time.
During the last bits of the game and working a bunch of princesses/nuns/wives to S level, popping in immediately cumming on their face then leaving to go to the next one, and then doing the same during the first sex scene leaving them at 2/3 or more on the way to their finish. I distinctly remember thinking, gawd I hope she isn't pissed to go through the whole corruption process and get no satisfaction whatsoever.