There was a related podcast recently somewhere, the idea was that evolutionary lungs come from guts, so maybe guts would still have some ability to absorb oxygen, which, turns out, they indeed do. This could have some practical uses e.g. in intensive care situations where the patient’s lung is useless (extreme COVID), which could give a last resort breathing opportunity while the lungs heal to a usable condition. Furthermore it gives a shitton of opportunity for butt jokes
I tried that as well, but for me it was like being 10 again: -you meet the bandits -I, the lvl1 player kill them all -OK -I just remembered my party had a necromancer, raise the corpses -sure thing -I march around with my undead army and murder everyone who is in my way -This game is about creativity and cooperation -Not today -OK