Music in Dungeons/Tombs/Mines
I noticed that when you enter these areas, it plays the public music instead of what I think would be the more fitting dungeon music. Now I know that this wasn't the case for Morrowind, as it only had two types of music (Battle and Exploration), but I think that we could at least take advantage of Oblivions music system and play dungeon music in the places deemed appropriate. Because in my opinion, the rather peaceful public music doesn't match with tomb raiding.
The above are just some examples and lists of places which I think could use the change of music.
There is also some discussion of this issue in the old thread on music and sounds: