So I had this idea that I decided to share with my guild and after a very interesting conversation, we decided I should post this on the forums and see where it goes. Please let me know if this sounds like something that you would enjoy, and maybe we could see it in a future update!
So the idea is, what if you could align with one of the Daedric Princes or one of the other gods within ESO? By that, I mean you could make a deal with them and gain a new skill line and boon. We have all seen followers of Stendarr and Meridia, even mad men of Sheogorath, but why not join their ranks as a player?
As an example, im going to use Sheogorath. To align with him, you would have to make a deal with him where you lost your sanity and be marked as insane, but you could gain a skill line for him with skills that only a mad man would find useful. Perhaps you could gain unqiue dialogue, like the intimidate or persuade, but instead it would be insanity talking. You could use new dialogue with NPCs that only insane people would say. For an active ability or ultimate, you could perhaps use Wabbajack to transform your enemy into something more amusing.
The possibilities are endless, and this is but one I have thought about. There are many more Daedric princes and even the divines, all of which could offer something unique and fun to the PvE environment. This would also add to the role playing element of the game, because deep down, we all have some desire to serve our favorite deadric prince as they spread chaos through Nirn, or even fight that chaos by serving one if the Eight Divines.