Im new at this whole Forums thing because I wanted to suggest this as Dlc for the game. I doubt it would actually be seen by The Skyrim guys but this is my idea.
If you see any errors in my ideas then just leave a comment.
The developers should develope a new dlc in which you are able to travel to the Oblivion plane through a Gate that was created by a Daedric Lord during the Oblivion crysis and was going to be used to advance Oblivion creatures into Skyrim and take it over but while Cyrodiil was having their Crysis, a secret battle was waged between the High Kings forces and creatures from Oblivion after this portal was brought to the attention of the High King of Skyrim of that era.
Now after the Cyrodiil crysis ended, the gate in Skyrim closed. The High King then made everyone who knew about it to keep it a secret as if it got out to the world, it would seem like he was anable to do anything and his leadership would be questioned. It was then long forgotten except for few notes that are scattered arround Skyrim vualts.
That would be the history.Heres the basic storyline.
So the Daedric Lord that is in the Skyrim mission "House of Horrors" Opens up that long since forgotten Oblivion gate and wants to retry the takeover of Skyrim. Now to everyone else in Skyrim have started seeing strange things going on but nobody expects another Oblivion gate until a little boy gets an audience with the High Kings court and reveils that he has stumbled upon and knows the location of the Oblivion gate. Now this is a suprised to everyone but the king sends someone to investigate the report. When that scout doesn't return, the King has a message delivered to the dragonborn saying that the Dragonborn is wished to go Investigate the disappearance of the scout.
The dragonborn investigates and finds the gate. He/She enters and finds that the gate is situated at a center of a "Daedric Community" (Featuring New Types of Daedra) inside the Oblivion Plane. He is immediatly grabbed by one of the Daedra who live there in the "Community" when she enters and the screen fades out. The screen fades in and the Dragonborn is hanging in chains by his arms. Next to him is the scout who introduces himself and talks about what happens. After he finishes his little story,he tells the Dragonborn that they need to find a way to escape. Before he can finish his sentence however, a Daedra guard walks over and unlocks the scout. The scout questions the intent of the guard but as he does so, More daedra fill the room uncluding the Daedric Lord that opened the gate. He tells one of the guards to procede. The guard then grabs the scout and forcefully attatches a substance onto the face of the scout. The scout then starts to have a seizure and lays still for a moment. Then he starts mutating into a horrible Daedra/Nord mutation. The Daedra lord proclaims that it was a success and orders that new mutation to kill the Dragonborn. Then as the monster walks torward the Dragonborn, the Dragonborn uses Unrelenting Force on the Daedra and somehow breaks free of his chains.
This is all I've got at the moment but my main Idea is to have a story line to it but also to be able to return to the Plane of Oblivion and actually do things there. Maybe have Daedra and Other species from Tambriel start living in Oblivion and make the Oblivion area much more vast. Just at least have a "Community" inside of Oblivion. Leave your ideas and comments below.