They should bring back the openess of the world back, also some things I would like:
- Bring back the nights! Add some dangerous beasts to lurk in the shadows, also placing campfires would lure them at it
- Dark dungeons. You must use light spells and torches to see what lies deeper in the depths
- Solo "dungeons", hundreds of them across the world. Some smaller and some very large ones. Place hidden treasures and make some enemies guard them.
- Wall climbing for rogues, make it possible to blend into enemy cities. Pickpocketing merchants is more rewarding but also more risky (Elite guard search parties looking for you if caught) Could also pickpocket friendly merchants.
- Class quests back
- Separate small "5 min faceroll" dungeons with much longer dungeons with shortcuts and separate wings etc.
Not all want streamlined gameworld, some players enjoy immersing with it (Without it going LARP).