Also there is a lack of unique voices in the game, pretty much each race only had a male and female voice which I think they should change like in Fallout 3 where everyone had a unique voice.
Another problem is if you get an NPC really annoyed with you and make them say hateful stuff to you as soon as you start a dialogue option they say it in a much calmer voice, for example if you speak to the Dark Elf who's house got taken away he speaks to you in a drunken way and as soon as you click the quest dialogue option his voice somehow immediately sobers up, which they should defiantly change in Skyrim.