Next things would be nice in Skyrim.
Gameplay:
-Snow storms! Skyrim must have snow storms. You could go to a cave or a tavern to wait it go away.
-Freezing weather.. As I live in Finland I know that the weather is really cold sometimes, It would be nice if there's some degree system in Skyrim and you should wear something warm sometimes, a possibility to freeze or get a cold if you stand too long in the freezing weather..? But of course Nord's wouldnt have a problem with the weather.
-Hunting is a must. A hunting skill sounds nice.
-Able to chop enemies while mounted (horse combat?).
-BETTER MONEY SYSTEM! Make it more realistic! 10 septims for a wold pelt? oh come on!
-More NPC's in town's, something like the Morrowind Comes Alive mod on Morrowind that added thousands of new NPC's.
-NPC's and monsters shouldn't level as the player levels. Have you seen a bandit with glass armors?
-NO FAST TRAVEL! You should travel by foot, by a boat, through the Mages Guilds teleports, Mark & Recall, Intervention spells, by riding a horse and with Horse carts.
-Bring back throwing weapons and spears :3
-customisable armors, we want something unique!
-Surviving nights in wilderness would be hard because of the monsters (werewolves ), weather and others dangers and you should spend a night in a tavern or a house.
-How about hiring mercenaries to your aid? Or making a gang/group/team?
-Players would love to be able to make a own house, something like in morrowind but more advanced and you make the decisions, like who to be hired as a guard, what to build next etc..
-A compass but not the arrow that says to where to go, it ruined the RPG feeling that was in Morrowind.
-The combat music shouldnt start instantly when an enemy is near. A skeleton with a giant axe scares the crap outta you, that kind of moments gives nice spice to RPG's.
If some people have read about TES lore, you might know about this. The Dark Elves were cursed by Azura to be dark skinned, red eyed and to have a throaty voice, but in Oblivion, dark elves were not so dark and had almost helium voice... It just doesn't fit! I loved the Morrowind dark elves, but hated the oblivion dark elves! Please, change it back to old style!
-Archery would be more realistic than *stretch* *release* *tsonk*. but NO FIREARMS!
Graphics
I haven't got much to say about graphics as I think you got the things already covered.
-You would see your body when you watch down.
-more blood, blood on walls, blood on armor, blood on weapons etc.
-some armors and weapons would shine and reflect a bit.
-Enchanted weapons should have more than little flash. Like sparkles, shine, aura around it, also some sounds when hitting a opponent.
So that's it for me.
Now you tell your own opinions/wishes/etc. blah blah blah