I've been playing the Elder Scrolls series since Arena, and I know in the big picture this probably isn't important to most people, but I really miss being able to wear clothes/robes under/over my actual armor. It was fun getting my character naked in Daggerfall and going into a shop and playing dress up before I bought a ridiculously impractical outfit to wear under my armor.
/le sigh
You're not alone. While I honestly don't care much about being able to wear a robe under/over my armor, I do certainly care for how little of a choice we have in our clothes. I even saw some supposedly rich npc wearing what looked like a dirty robe a local inn waitress would wear : /
I definitely miss all the clothing options we had in Daggerfall indeed. It's not really a huge deal, but still yeh, it was fun wearing some very expensive outfits for no other purpose then vanity / roleplay, if I recall right, Morrowind still had some decent choices.