some characters would gain no healing benefit from being bandaged it would also be a reason to expand bandages, in the future, to do more than just improve heal chance and amount.
Might it be enough to have bandaging to allow someone to heal via resting, when normally they wouldn't? I'd guess there's a flag on regen of HP that says something like
If (Curr-HP < math-on-Total-HP) Then no-regen.
that could be changed to
If ((Curr-HP < math-on-Total-HP) And (Not-Bandaged)) Then no-regen.
This might allow folks to practice Bandaging skill when folks aren't so badly injured as well? Since the HP gain is gone, and the bandage is basically just being wasted if the attempt is not needed. What end up with is:
a) no real change in the injured person's condition (on success)
b) the medic makes things worse (on failure)
either way the material is used up.