Throwing weapons would go a long way for me.
Also more things that stick to the lore that was previously represented in earlier games and books.
A hardcoe mode. Frost dam in the mountains. Starvation. Dehydration. Sleep deprivation. 25% reduction in carrying capacity.
A parry system for Dual wielding that allows you to deflect blows at the cost of your health and stamina. Master level perk for block. Basically just like a 50% block of the damage and allows an opening to be found in the enemies defenses after their attack so you can do some counter strikes and such.
No forced 3rd person werewolf...allow 1st person.
More weapon variety like Spears and such and different ways for them to effect combat.
Epic first person interactive cut-scenes.