When I first started playing Soulash I noticed I could butcher fish people, but not other kinds of people. I guess because it would be too "dark" to beat some hapless farmer to death with a rock to butcher the body for meat/leather; but c'mon now, it's a dark game. Maybe only for certain races, like the troll for instance who needs to eat a lot more (and traditionally trolls do in fact eat people), would help add variety to races and balance their substantial hunger.
I'm not 100% but I'm pretty sure there are a lot of other enemies (dragons?) that can't be skinned/butchered and I think this is a missed opportunity for some more interesting crafting recipes. Also, if I'm not mistaken, you can only butcher or skin a body, not both. This doesn't really make sense, so unless I'm mistaken I think it would be good to be able to do both as one action to get the hides and meat from each kill.