I want to code in protection from digestion. Probably via the 'bio' value on armor. But that leaves a few questions as to how it could be done:
Only damage limbs without 100% bio protection? (so wearing a full spacesuit or RIG would generally protect you)
Should armor slowly be reduced in effective protection?
Should damage to limbs with less than 100% bio protection be proportional to how much protection there is? (aka if they have 75% bio protection, only do 25% normal digestion damage to that limb)
It's really a question of... do you want this as a feature (I think Ace does so it might get added anyway ) and whether or not you think the armor should degrade. Or if only some types should. Or whatever.