Few ideas for some dlc that could be made

1. A new arena for people to fight in(guessing people would still fight for money)

2. pretty sure i heard this somewhere but probally going back to shivering isles 200 years later to find your main character s the mad ruler and a whole new questline.

3. plenty of new houses to be sold like in oblivion and horse armor.

4. Savengarde is under threat again and its up to you to save there souls from destructio.

Bear Armor DLC.