It's a nice way to spawn Krampus and get a chance at a Krampus sack.
If I may continue the suggestions, continuing the Shark Fin Soup idea from Shipwrecked would be a way of adding a drop to Rockjaws.
On SW the recipe adds 10 naughtiness, though if the fin on DST comes from Rockjaws, they would be much rarer, and might be worth more than 10 naughtiness, so to be more rewarding towards Krampus farming.