bronze plover
I had this idea where An NPC will spawn at night it will try to dig up your barried followers and you cut a deal with em. He gives you money other items for a body & if you have more you can come by.
If you take the deal it gives you an option to go to an aera where you can exchange corpses for money or even other things.
However if you resurrect a follower you gave, they will notice and take back their money and break objects and take more bodies or kidnap other followers.
The higher the level the better rewards
Oh since their animals it's technically a pet seminary.
Maybe you can turn your followers into zombies so they don't need beds or won't need food. Since cannibalism is already a factor maybe zombie followers will request ritual and only eat follower meat.
noble python