User blog comment:G0LD3NF1RE/Skyrim Dawnguard DLC/@comment-88.91.120.129-20120502132646/@comment-5060344-20120502171142

Cool as that would be I can't see that happening. The vanishing of the Dwemer and the whole Kagrenac and Numidium deal is one of the main plot points in the entire Elder Scrolls series. Explaining all of that in one DLC or even a combined story over all of the Skyrim DLC's would be incredibly difficult. No, I have a feeling the Dwemer will have to sit patiently in whatever cosmic loophole they're currently in for a little longer.