User blog comment:JAlbor/Dawnguard: What Everyone Should Know/@comment-5265043-20120706040052/@comment-3496379-20120729224452

I could do you one better on the Dwemer mystery--instead, why not conduct your own take on Arniel Gane's experiment?

I can see the player encountering a Dwemer enthusiast (with some secret motive slowly revealed over time) who seeks the same answers, and names you as an unofficial assistant. But unlike in Arniel's case (because I think it's universally agreed that he had no flippin' idea what he was doing -_- ), you have to find more pieces to the puzzle.

Specifically, Kagrenac's Tools, supposedly lost during the Third Era--lost, but far from destroyed. Keening's already taken care of, and then the Bethboys could add a couple locations (like a cave or another worldspace) where Sunder and Wraithguard could be recovered.

(Speaking of worldspaces, that's the only way I can see a return to Cyrodiil in a Skyrim DLC. Maybe accessible through someplace in the Jerall range in the south.  And Elsweyr's way too far to the south for that idea to work with them.)

If one wanted to work an Elder Scroll into this, I suppose they could possess enough power to act as a suitable substitute for the Heart of Lorkhan--specifically, a Scroll that predicted, say, the return of the Dwemer.