It would also be nice for criminal restitution penalties..
For example, when someone is stocked the bile loss through whipping could go to the victim, or there could be some type of silver compensation that is passed to the victim when the criminal pays his release fee from the stocks. Obviously if the victim was murdered the compensation could go to his next of kin, just like in real life.
Unfortunately there doesn't seem to be much justice in Salem because of criminal alts, and the ability to buy yourself out of the stocks.