User blog comment:Blood Reaper/Todd Howard Hinting at Future DLC's and Patches/@comment-2219562-20120220004058/@comment-72.193.63.90-20120221072356

Instead of fighting the actual daedric prince we should have to defeat their champion. The champion should have the powers of the daedric prince except at a lower level, they're not as powerful but they still are strong. After we defeat their champion the prince we're representing steps in and forces the other to submit (the other prince being weak since we defeated their champion who is a conduit of their power and thus ,having died, weakened them) thus allowing you to take on the mantle of prince but having a little less power than the original. This will allow you to have your own realm in oblivion, aka a new house.