Actually, my silence only implied the following:
a. I was busy doing something else.
b. I'm not nearly competent enough about Tamrielic lore to fully evaluate how your storyline will fit into known lore.
To me, it sounds fine. I. e., in and of itself, your new background story is coherent, and I can see an interesting questline emerging from it. You'll need to be careful not to drift into simple "Go there, and kill that" quests with it, though.
I am going to try and not allow that to happen with the quests. I am really impressed (always use) ROHT, I certainly wish I had your quest-making ability! World-building is my pride and joy. But I have really only ever finished one quest before, so when I get to that point. I am going to be asking a lot of question!
You have the great opportunity to play with both Azura's and Nur Dunroeth's personality: do work out their motives and personalities in great detail, but only tell the player what Azura/Nur Dunroeth want him/her to know. The more obscure it is at the beginning, the more interesting it will be to figure out what's behind each task the player is given.
I plan to go in depth with both of them. Azura may be a little more difficult, simply to keep her with the current lore. I may have to re-research all her encounters to see how she reacts in them.
I'd fully understand if you'd decide to only write one side of the story - writing two ways of solving a quest really takes up a lot of time, and keeping track of all possible situations in later quests is a demanding endeavour. But even if you choose to write the questline from one perspective only, I nonetheless suggest that you work out each party's motives in the tiniest detail. So if you only write the quest from Azura's perspective, for example, you'll always know how Nur Dunroeth will act/react, and why. As a sideeffect, you'll have laid the (theoretical) foundation for playing the quest out of Nur Dunroeth's perspective.
In short: yes, your new background story looks solid and interesting to me. I have no idea what you have in mind for the actual quests, but I can definitely see a lot of potential.
B
If I do offer an alternative, it may not become an option until later in the mainquest, sort of like Bloodmoon (I think, Ihaven't actually played BM in a while).
Thanks for the very thankful tips bhl, I am going to take this to heart as I further develop the plotline. Once I get a draft done I may post it here, just to see if it flows well. I still have some AI-lore books in the writing. But I may write some more on Nur Dunroeth and possibly Azura.
But one thing I think can be seen of Azura, which may not seem so selfless and good: She always seems to get what she wants, and when things don't go her way... she curses people, removes their power, or kills them, etc.
Anyhow, I'm off to do some more world-building and/or develop the back-story! Thanks again