2. Make a bigger world (around 30% bigger)... and thus, bigger cities as well.
3. Add proper directions to quests, or at the very least on Radiant Story quests let them say "Let me mark it on your map".
4. Take use of the journal and add directions and logical player thoughts there.
5. Scrap the ugly, extremely over-used HDR and aim to make a more realistic lighting system thanks to Cryengine 3 that isn't outdated by 5 years or so.
6. Add destructible environment on trees, bushes, etc that regenerates over time.
7. Have ... better textures that doesn't look like they're from a 2002 game.
8. Have an economy in the game, which can affect you and which you can affect.
9. Enhanced face animations.
10. Make dragons appear less frequently, but be more powerful.
11. Better general dialouge. The NPCs shouldn't say the same thing again and again to you. It should be more randomized. In Skyrim the lines aren't randomized, they start the same again and again. Only if you click on the NPC or stay near the NPC for a while will the NPC say a different line. My point is, these different lines should be randomized from the start, thus making the dialouge feel more random instead of NPCs saying the same thing againd and again.
12. Aim to test the game more thourougly and thus have less bugs before releasing the game.