Now that does sound epic and definitely worthy of Elder Scrolls lore (*hint hint Bethesda*)  Also, and this is just my thoughts, the war between the Thalmor and the newly formed Stormcloak Army could be the catalyst for a Daedric Lord to escape Oblivion and wreak havoc upon Nirn.  I was thinking possibly Boethiah, since this would be more up his/her alley, then it would be up to a chosen few to put an end to both the war between the Stormcloaks and the Thalmor and Boethiah's terror spreading across the land.