Hunter Worm added. Be sure to fix yourself a burger or some tacos to eat while reading it
Dangit...Nitpick: The leeches should have Int -, not Int 0, otherwise they are incapacitated. Also your description leaves off amusingly, "They have been bred hundreds of years to ANESTHETIZE."
Isn't that what they're doing?Certain types of maggots will eat dead tissue from a wound without burrowing into the skin or bothering the living tissue, even kill bacteria in some cases. They might be a good candidate for helping to heal wounds or increase natural regeneration or something.