Alright, so you know how when you unsuccessfully sneak into the Inner Sanctum of the Temple of Dibella, Mother Hamal scolds you, and then tells you to find their new Sybil? You notice how she said that normally the punishment for breaching the inner sanctum is "a period of servitude"?
What I want is a mod that makes THAT a choice.
Mother Hamal tells you to find their Sybil, and you either have to find the kid, or kill them all like a butt. However, there should be a third choice:
"Ugh, I can't stand kids. I'd rather be a servant."
So, Hamal agrees to that... and then makes you fetch the Sybil anyway. After you bring the weird kid to be combed for glorified prostitution, you get your reward, and go back to Hamal.
"Alright, I got the kid. Now, if you'll excuse me..."
She gives you a "Not so fast", and then collars you. Thus officially begins your period of servitude. (Much to your chagrin, as you thought finding the Sybil would exempt you from that.)
Unlike slavery with bandits, servitude with the priestesses isn't as cruel. They don't verbally abuse you, they give you regular meals, and you even have a place to sleep.
If you have mods that add more personal needs (i.e.: Private Needs, Seeing Yellow), one of the priestesses will parade you naked and chained through Markarth to the latrines.
Although, if you get dirty, maybe they'll hand-wash you. (Part of their Dibellan practice of intimacy.)
The point of this whole thing, obviously, is for them to use you as practice for their Dibellan Arts.