Since most of the map is covered now - what is still missing or what would you like to see? With game mechanics i mean something like the ability to assassinate or steal...a mechanic to enrich the story content rather than a specific combat skill.
For me - i'd really like a dawnguard dlc...could be the sice of murkmire, clockwork city...a story dlc that involves the fight between a campire clan and the dawnguard, with vampire and dawnguard armor (my favorite armor out of all elder scrolls games). Maybe the conspiracy is that the dawnguard turn themselves into werewolves to fight the vampires better so you decide if you want to fight on the side of the vamps or wolves....