Ok, so before I start please excuse my grammar. (SPOILER) Ok remember how in Morrowind you killed members of the Dark Brotherhood? Yea, in Skyrim they should give you a quest to hunt them down if your not into being stealthy, light armor, or murdering innocent civilians =). Of course you can ignore this quest and continue playing the game and eventually joining the Dark Brotherhood. I always thought it would be cool to kill the most important members of the Dark Brotherhood and eventually killing them all =). But of course there are going to be consequences, like maybe the occasional assassin.
But anyway thanks for reading the post =).