Same thing with eating: give the player a reason to eat, rather than a requirement.
Maybe I'm just strange, but the eating itself can give me a sense of accomplishment in a game.
Imagine: freezing, dark winter day, you leave your campfire in desperate search for food. You come on a lake and use your axe to hack a hole in the ice. You spend the next 4 hours ice fishing with little skill and crappy equipment, but finally manage to catch a nice 2-3kg pike! Before you're back at the camp, you've got some frostbites on your hands, and the fire has gone out. Good thing you were smart enough to store some firewood. With your long survival experience you manage to light the fire again, even with the icy wind, snowy pieces of wood and frozen hands. You melt some snow and boil water while the pike is roasting, and treat your hands with warm water and bandages. The pike is delicious, and gives you strength to carry on your journey for another day.
I find this to be an example of realistic, challenging but still rewarding and fun gameplay. The same game includes several damage types, such as blunt, piercing and slashing, different armour values versus different damages, hit locations, wounds according to damage: bruises, fractures, punctures, cuts, even dismemberment. Survival elements with tracking, hunting, trap making, fishing as you already know, food preparation, wound treatment, item making, mainly crude weapons and bandages but also rafts, shelters and houses. You can chop down trees to make yourself that precious firewood, and you can skin the animals to have fur to help you survive the winter.
I'm not asking too much if I want the same things in TES5? Wouldn't that be like, you know, WAY better than some RAI or other lame old crud you see in every game?
If you are online, inns become public lounges where you can chat and trade with other online players at all hours of the day
I would hate to see any multiplayer or online elements, but that is atually the only good idea I've heard about the subject. I could avoid it entirely by playing offline.