There are two roads leading to Morrowind from Skyrim. This makes it somewhat probable that the DLC will probably focus on the western part of Morrowind, most likely Blacklight. In fact, Blacklight seems to be the perfect location for a DLC; it borders Skyrim yet it can have the alien landscape of Morrowind. Here's a http://i.imgur.com/s3mbz.jpg of what a Blacklight DLC could consist of.
Now, consider the other provinces of Tamriel:
So, that means: 1) a plane of Oblivion (as in Shivering Isles). The 'Dawnguard' name suggests Azura's realm or 2) something that's near Skyrim yet unfamiliar to players, like Blacklight (has western Morrowind ever been seen on an Elder Scrolls game?)
Now, consider the other provinces of Tamriel:
- High Rock and Hammerfell - already covered by Daggerfall. Unlikely to be featured as a DLC.
- Elsweyr - you have to cross Cyrodiil to get to it and a desert setting is too much of a contrast compared to Skyrim's cold climate. Plus I think implementing 9 or more races of Khajiit would be tough.
- Valenwood - It's size is more fitting for a new Elder Scrolls game rather than DLC. Plus it has moving tree cities. Now that would be pretty tough to implement using today's hardware.
- Black Marsh - again, you have to cross Cyrodiil, and I wonder how they'll explain that (i.e. do you pass over the Cyrodiil landscape? or is it just like a teleporter?
- Cyrodiil - covered by Oblivion
- Summerset Isle - the Thalmor point strongly that a future Elder Scrolls game will involve this in a major way. It's too large of a locale to be covered by a single DLC.
- Akavir - again, too fantastic even for Elder Scrolls: snake and monkey-like races, Japanese-influenced architecture. Although it IS the land of the dragons...
- Atmora - this might be possible, seeing how it is home to the ancestors of the Nords..
So, that means: 1) a plane of Oblivion (as in Shivering Isles). The 'Dawnguard' name suggests Azura's realm or 2) something that's near Skyrim yet unfamiliar to players, like Blacklight (has western Morrowind ever been seen on an Elder Scrolls game?)
