A neat idea with plenty of potential. A few ideas that come to mind:

- A girl with anorexia asks to have all non-essential meat and a few feet of intestine removed, leaving her like a sort of walking skeleton whose skin is so tight you can't just count her bones, but most of her organs as well
- A girl with a fisting fetish asks to have her pussy, cervix and uterus expanded to the point where she can easily fit a basketball up there
- A massage therapist complaining of headaches asks to have the top of her skull removed so she can at least massage her brain whenever she has one

Looking forward to more applications for the MegaMutilator 7000.