Just throwing this idea around here, but if the Aldimeri Dominion tried to invade Black Marsh, is it possible for the Altmer to survive there long enough to take it over? What brought this up, was that the Empire never really took over all of Black Marsh, and if the Thalmor (who are Altmer) wanted to, could they live with the diseases that are in the certain areas?
It just seemed like a weird thought in my head at the time, and wondered what other peoples opinion was on it.