In Oblivion, the Oblivion Gates close but The Infernal City confirms that the Oblivion Gates left thier "mark" (ruins) and Sul succesfully opens another one by ritual.
Now in Skyrim, after Alduin is dead and done, Dragons still linger here and there since technically you banished Alduin, not *all* Dragons.
So my point in question is: Are Dragons gonna be part of any future lore when it comes to any, well, future lore years from the time in Skyrim? (Look at it this way: Years from now (as in years from the 4E), would Dragons be a common enemy or common game for hunts?)
Apologies if I was not clear.