Mountain climbing. Here is a rock, at perhaps, a 40 degree angle. I'm sliding down it slowly. I can't climb up. I can't jump. Now I just run my way down to the bottom, probably falling because my feet lift off the mountain thinking I'm on a flat surface. And here is a ledge lower than my shoulders; in reality, I could pull myself up with ease. In the game, I'm a lightly armored blademaster with minimal weight on my back and wearing gloves. I can't climb it.
I know the Elder Scrolls have never done climbing like this. But, if, just if, we had climbing like in Assassin's creed, now that would be great.
+It encourages us to use roads. -Roads svck, they are covered in trolls, bears, bandits, and thugs. Also, I like being exposed to the wild, making my own trails, but I hate not being able to climb a shoulder-high rock.
"The modders will do it." -doubt it.
This is the #1 thing that annoys me in Skyrim.