This would allow a character to have several body mods at once. We could have something akin to the following traits:
Amputee
None
Minor (things like finger(s), ear(s) and so on)
Major (one or more limbs - hand(s), leg(s), tail(s), wing(s); or castration, breast removal, penectomy, etc. )
Brandings
None
Discreet (can't be seen when in normal attire)
Exposed (in visible places - face, hands, neck)
Piercings
None
Sexual
Mild (Little-to-medium amounts in typical places; ears, belly-button, lips, nose, tongue)
Extreme (either extreme amounts or highly severe - including stretching big holes in body and the like)
Tattoos
None
Mild (up to several tattoos that cover up to half of the body)
Extreme (close to whole body covered, or things like tattooing eyeballs)
Implants
None
Sexual
Cybernetic
Other?
Scars
None
Mild (scars that cover relatively small percentage of body (below 25%?) and are not very deep)
Substantial (deep scars and scarring that covers substantial percentage of the body)
Extreme (Big percentage of body covered, substantial damage to body like lack of cheeks, eyelids, burned away face and the like)