Things I like:
Graphics are nice
Better stories and more variation in graphics and the world.
More alive
Less bugs
More of the same things I loved with Morrowind
You still get plenty of gold from hunting vampires
More goodies and more action in the wild that feels well, just more in place.
No flying birds picking your head all the time!
Still moddable!
What you do during a fight has impact! (Read, you can fight in this game
)
Things that bugs me:
Consolly feel - inventory and the journal system.
Less is not more . I want crossbows, medium armours, throwing weapons etc. Give me!!!
Still favours casters a bit too much but well more a matter of taste.
The all knowing watch! If the police here was that efficient there wouldn't be no crimes, but still they let known necromances room around in caverns? - Ok, if you kill a peson in his home, they know you did it! Bad you go to jail! You kill someone in a creepy cavern - they know you did it.
A daedra has his little lair of child sacrificing and all in general be a bad naighbour behaviour - ten minutes walk up the road and the damned guard on horse asks me "whats up citizen"?
They know where you are! You can't hide so start running! If you sneak around being really good at and have a chameleon spell and hits the caster in your enemy group from far away suddenly they know you are there and you can't sneak.
Weapon swapping during fight is hard - but crouching and walk like an astmatic ant is ok.
No magic creation except in the big city after doing several stupid quests!
Scalable enemies are ok - to some degree.
Scalable items are not! Sick highwaymen with Silver weapons and dwarven armour are not fun!