There is still plenty to do. You need to complete all of the guilds, do all of the daedric quests, hunt down all of the unique items, Bard's College, etc.
What surprises me as a former WoWholic, myself, is that you aren't more into the grinding, crafting, leveling aspect.
I spent hours upon hours on my Skyrim main grinding all of his skills to 100, getting to level 81, mastering the professions (Alchemy, Smithing, Enchanting) and figuring out how to use them all together to make godlike gear sets.