1. True Customization of the Character Model, That would be my dream with this new engine the ability to morph your character. Make him or her as skinny or as Fat as possible without being completely unrealistic.
2. No Level Scaled Quest Rewards, Lets face it if you complete a quest you should get the same reward at level 1 or level 30. I hated that in Oblivion. Level scaling wasn't a problem for me but I thought it was overdone to a degree and the quest rewards shouldn't have been Leveled Scaled.
3. More Choices when doing a quest, Basically I want more choices in a quest like in Oblivion if I wanted to side with the Sirens in Anvil and I'm playing a female character I should be able to choose which group I want to side with.
4. Dark Brotherhood and the Thieves Guild, Please by Azura's name bring those groups back in Skyrim. Easily my 2 favorite guilds bar none.
5. Better Looking Female Vampires and have Vampires included in Skyrim, This was a huge Pet Peeve of mine. I hated how the Female Vampires looked like a man in Oblivion and if Vampires are in Skyrim I would want the Females to look Hot but not like how they looked in Oblivion.