I'd love it, but I can see why it was left out. FO is about survival,
Who's to say TES can't also be about survival? TES games would be only greater in an RPG sense if they had survivalistic aspects.
Plus I remember reading on here that many people found it irritating and lacking depth,
...which is why you make hardcoe mode an
option, the way Fast Travel is. So complainers can't complain and those who really want this feature can make the best of it.