I actually like it, costing FP out of combat is a pretty low cost but it makes sense. Also if you're concerned about using supplies, remember that rank 3 first aid just removes almost all injuries. Obviously the 10% bonus healing is not needed or balanced, and no need to heal FP. Other than that, looks good.
I also think we should see more injuries in general if such a thing was implemented. Injuries that last for a long time and make you actually seek out a healer without being a fever that slows your ass down and forces you to drag your ass over or wait it out. Just minor debuffs that are lasting and make for nice medical rp, but can still be ignored. As it stands, injuries are either completely negligible or very debilitating imo. And they don't last that long.
I also think we should see more injuries in general if such a thing was implemented. Injuries that last for a long time and make you actually seek out a healer without being a fever that slows your ass down and forces you to drag your ass over or wait it out. Just minor debuffs that are lasting and make for nice medical rp, but can still be ignored. As it stands, injuries are either completely negligible or very debilitating imo. And they don't last that long.