Now, before anyone starts freaking out with "It's not realistic to change your face", here me out! When I play a video game, I like to try and make the character look like myself. When I first booted up Oblivion, I was blown away by the sheer number of tools I suddenly had at my disposal. I could spend hours upon hours customizing my character, and still not have perfected it.
But I wanted to play.
The end result, was either I just play a default character appearance, or spend hours upon hours tinkering with various settings. And even if I chose the latter, what if I realize I've made a mistake? Even something as trivial as your character's nose looking a little wonky... When you're dumping upwards of 40-60 hours into a character, that one little gripe is going to drive your crazy.
Hence my suggestion; let us customize our character's Face and Hair, even after we create them. Pretty, pretty please?
If ABSOLUTELY nothing else, please add a set of pre-made faces, like you did in Fallout 3, but include one for a Barbarian-looking, red-haired Nord. To me, nothing screams "Viking!" more than red hair.