I would like the tone in Skyrim to be darker than in Oblivion. Sure I'd like to have nice, sunny days in Skyrim, but I don't want every day to be a bright and sunny day. I'd like to see some heavy fog, bad storms (not just rain), heavy wind that kicks up dirt and dust (refer to Morrowind), and an overall more harsh landscape. In addition to harsher weather, I'd also like to see more fearsome creatures roaming the land. The wildlife in Oblivion was a joke, I could kill a mountain lion with a single throw of my fist. I would also like the lighting to not be so bright, to emphasize the danger.
Basically what I'm saying is that Morrowind felt more wild, mysterious, dangerous, and interesting whereas Oblivion felt like I was too at home everywhere I went. I would like to see things be more dangerous, dark, and mysterious. Anyone agree?