I'd like to have a huge map with no stutter.
I know the two won't compare but I've been playing "just cause 2" lately and I have been amazed with the enourmus amount of land they have designed and the lack of any stutter, a whole island with mountains and beaches and takes ages to go from one place or another with great detail, terrain, water, installations, houses, cities.
It is true Skyrim would not need such vastness and that "Just Cause 2" has nothing like the sheer amount of elements of detail or AI an Elder Scrolls game has but it will be interesting to see a huge land with great detail, the more land the more quests and stuff to do and the longer the game will last...
So briefly, a huge land of graphics for me please