I'm crossing my fingers for either a Daedric Prince's realm (I'd love to stroll through Vaermina's realm of dreams and nightmares ), or an expanding of the Guilds (as there's almost general concencus that they were quite underwhelming in comparison to Oblivion's).

Ok, for me a nice castle (as in Oblivion) or a bigger territory to own with fireplace and cooking pot some gardening aaand a lovely comfortable stables for my horse (water and hay included). Nope, not kidding. Please, do not hurt me...

something Akaviri I hope. Or maybe we'll go down to one of the southern provinces to take on the Thalmor

I've always theorized that we'll be returning to Cyrodiil. i won't spoil what makes me think this, but if you play the Imperial side of the Civil War quest, some dialog from two specific NPCs will hint at my theory.
The second thing that hints at th...  moreI've always theorized that we'll be returning to Cyrodiil. i won't spoil what makes me think this, but if you play the Imperial side of the Civil War quest, some dialog from two specific NPCs will hint at my theory.
The second thing that hints at this was Bethesda stating that the DLC will be much larger than in the past, similar to Shivering Isles. Shivering Isles was basically another province in itself, albeit a smaller one. Now, a simple work around (for Bethesda) could be limiting which cities in Cyrodiil are accessible, as most will have no doubt suffered massive damage due to the Great War. This could ease up resources and cut loading times down on Consoles (similar to a loading screen after entering a building or dungeon).
It's a long shot, sure. But I know a lot of Elder Scrolls fans would absolutely explode with excitement if it actually came true. After all, why would both Morrowind and Cryodill (and possibly all of Tamriel) be modeled very close to their true heights. Some say for modders...    less