I'm reminded of that scene from "Into the Wild" where he thinks he has the wherewithal to kill, butcher, and preserve a moose before the carcass is claimed by nature. Boy was he wrong.
If it's too big to lift single-handed, then you'd better cook it where it falls...fast. Or hunt it with a party to begin with. If it weighs just enough for you to drag it, it better be to somewhere close by.
Not sure if the developers are thinking this detailed about hunting, but I think that realism does justice to game immersion. Role playing hunter cultures by their ethics makes sense to me. The ways rural culture differs between regions, not just urban, could be a great expression of the game's scope. Hunting morays go straight to the heart of the matter. Visceral to players. Another thread for skilled trackers to glean information about the people in the area.
Good delineations for advanced Survival skills--hunting big game singlehandedly without it going to waste...or perhaps skill levels in Butchery are measured by how much meat you can preserve for use within a given time frame? How efficiently you can convert animal weight into food weight? Hide quantity. Etc.