Board Thread:Lore Discussion/@comment-24.19.86.242-20130628061911/@comment-7153552-20130702214621

By the inherent nature of a Deadra, they are not 'good'. . . they aren't truly evil, either. They are their own force, with their own motives, and their own unique set of morals. Azura was a guiding light for you in Morrowind because you were a force for her people (the Dunmer) and against an evil she did not agree with. In fact, Azura is the only Deadra to show certain Aedric qualities when it come to the respect of mortals (she just happens to be involved with them more than the Aedra).

As for one of them being a 'force for good' or 'helping the hero' in TES: VI, I wouldn't bank on any of them. Sheogorath has been used in a whole expansion for one game, Mr Vile is too unpredictable and couldn't be trusted with a feather, Sanguine and Malacath are the better of the four options. However, unless TES: VI is set in Orismer I wouldn't look for Malacath being a part of it, and Sanguine has no whole people group to speak of. He has a community following, obviously, but that'll be more faction and side quest kind of stuff.

I think the Deadra being greatly and/or fully involved in the main questline of TES is a unique experience and shouldn't be done just to have it happen. It needs to be an absolute perfect fit, and without knowing the base story for the next chapter, it'd be shoehorning something into place, and that just doesn't work.