So with the show being set in the second age, we know we are likely to see the creation of the rings of power, and with that I would assume means we will see Sauron hand out the rings to Elves, men and Dwarves... Which means we will potentially see more of the Nazgul... before they were Nazgul. Would you guys like to see this? Or do you like that the Nazgul backstories are a mystery?
Personally, I would like to see them expanded on... like I always say... even if they do a terrible job, it does not change what Tolkien wrote. It is just something new to watch. Same reason I love watching peoples fan films etc :)