If I had a dreamlist of things I wanted to see in a future TES game:

• Slower day/night cycle out-of-the-box. Or an option to set it with a slider. (not via console)
  
• Real hunger, you constantly need to eat breakfast/lunch/dinner or you take hefty penalties more often.
  
• Simulated body weight, visually. You start out slender, and depending on your activities you gain muscle tone or even become fat. Example: At lvl 1 you pick up an axe and continually you get visually/physically stronger as the game progresses. Or you become a mage but you eat too much and you pick up weight and become rotund because you ride too much on horseback as well. Become a vampire, and you become gaunt and underweight?
  
• Hair growth. When you pick an initial style it becomes longer and untrimmed over time. Barber shops are required to cut hair and even shave beards. Throw in a place to change your facial markings.
  
• Simulated drunkenness. Posture changes depending on volume of intake, impaired judgement, stagger. If you drink too much you risk passing out.
  
• Fishing. Nuff said.
  
• Camping. Ability to set up camp, a tent, and make your own fire, set up cooking equipment, etc.
  
• Wilderness housing. Perhaps the ability to buy a deed for a house style, and place it anywhere in the game world when it requires ample space/slope, etc.
  
• More detailed options for decorations in your home. Also need better placement UI for items you bring back from your travels. As it's now you can't even put a goblet on a table without intense concentration.
  
• More crafting options, things like arrows as an example. Spears, Halberds, Crossbows, etc.
  
• More mounts, what if I wanted a mule, or donkey, ie. pack animals? What about an oxcart to transport the things you buy in town to take home.
  
• A place to visually place your active main weapon on the saddle of your mount, hook up your helm to dangle on the side for when you're out of combat.
  
• The ability to converse with NPCs while on horseback.
  
• More romance options. Not just get married, but also get divorced. Have kids? (It's not sims but still an option)
  
• Construct and captain your own ship for sea voyages. Ranging from basic canoes to long boats.
  
• Flying mount? (It's not an MMO, but imagine a future Dovahkiin taming and riding his own dragon.)
  
• A bigger variety of armors. Also able to repair broken armor, visually as well.

Maybe I'm being silly, but maybe you can think of some more nice ideas?

I was going to say no to this but you provided a good, worth while list so I have no choice but to agree.

But no hair growth, please.

We also need a Bleed out effect to the game so when you're dangerously low on health you slowly bleed out, but this should be optional.

http://www.gamesas.com/topic/1311878-official-beyond-skyrim-tes-vi-4/