Currently, if you teleport to your POH, you have to open your door, light up the incenses and train your prayer. If you than want to unnote the 27 bones, you have to do these 2 things again, which could be very annoying overtime.
My suggestion is that people can unnote their bones at the demon butler for a regular fee (same as in building mode, so 6k per 24 items, which comes to 250 gp per item. This should be a house owner only advantage and could make training prayer easier and less annoying in comparison with now.
Let me know what you think :).