As I'm sure you're all aware Vvardenfel is not yet in the game and there is much clamoring for its addition. However as Lore Keepers have pointed out the island is uninhabited at this time, there are no cities or towns.

Here the lore keepers are mistaken. There ARE cities, they just happen to be populated only by ghosts and automatons. The Dwemer ruins....

I think these should be our principal interest in a Vvardenfel expansion or DLC. We could even perhaps meet a Dwemer searching for a sign of his people. His name should be yagrum bagarn. How extraordinarily awesome would it be to interact with Yagrum in the years BEFORE he is infected with the corprus?

I think it would be great for Yagrum to have an entire quest line (or series thereof) in which you aid him in his search for his people! We all know how the story ends but the fun Is in the journey! Yagrum is/was a master craftsman and I think crafting should tie into this quest line. I can also think of a few killer quest rewards at the end of it all.

1: The spider mount thing he rides in Morrowind. ESO really needs some EARNED in game mounts. The Nightmare courser is awesome but I would like a mount that shows off more than my ability to spend cash.

2. Dwemer siege engines. Perhaps once a month or so Yagrum could send you a collection of Dwemer siege engines! (All Bind on Pickup of course) they could have unique effects and would make Cyrodil more..... interesting.