2) Vampires and werewolves santuaries with storylines.
3) be able to join the Vigilants of Stendarr and do quests about hunting vampires and werewolves with storylines.
4) Huge castles available for sale or earn by a long and tough quest.
5) New places with larger dungeons.
6) Horse armor.
7) New weapons, armors, spells, shouts etc...
8) Aside from decapitation, they need to add dismemberment.
9) Arenas like in the one in Oblivion.
Add more to the list with your ideas.