As most epic stories, the main quest of Morrowind turned out for the better. But what had happened if the quest had failed and Dagoth Ur would have grown strong enough to launch an assault that would threaten Vvardenfell? What if he had been successful in that assault? I've envisioned walking though a ash covered and dead ascadian isles. The city of Balmora laid to ruin, desolate and empty save for horrors that lurk in the alleys between the houses. Walking though the cantons of Vivec and seeing the aftermath of the siege. Clutter over the floor though out the corridors, the swiftly built barricades, the broken doors though out the waist works. Small settlements still standing or rebuilt somewhere else. The corprus and ash monsters in hoards, always to many to handle.
As a survivor, the scavenging for food, equipment and even something as simple as a torch will keep you busy when you are not sneaking by or running from ash monsters. You need to get away from Vvardenfell but no boats or magical means is at your disposal. Maybe there are other people in hiding? Hidden or well fortified settlements which has not yet been broken. Maybe there is a possibility to meet other survivors which will either try to kill you for your meagre supplies, or side with you. Maybe you'll find people who can help you flee?
What about the Empire? When will they strike back to reconquer Vvardenfell? Or have they already made an attempt? What about the Akulakhan? Is it activated? What chaos would it have wrought on the face of Vvardenfell?
Anyone else ever envisioned a post apocalyptic Vvardenfell?