Don't get me wrong, I love Bethesda's work on all their games - preferably their lore. I know, I know, it's impossible to explain everything, but a lot could be answered. I'm sure everyone wants to see the land of Akavir, or learn about the mysterious Moarmer. But commonly we're placed in a new plotline that nobody saw coming. There's nothing wrong with that, in my opinion (TES always keeps me coming back for more), but I guess I feel that maby that Bethesda could throw us into a new land and delve into its undeveloped lore. Akavir, Pyandonea, maby even the islands of Thras. What if Atmora were to become a more life sustainable climate, and open for new settlers - not just the nords? And I'm sure we'll eventually get to experience a full-out war with the Thalmor (Or - if you sided with the Stormcloaks is TES: V - Skyrim and crippled the remains of the Empire, what if Tamriel were to be a free-for-all for all of Nirn?). And not to forget - those dissapearing dwarves that people want to learn more about.
That's just my opinion on the lore, and what I would like to see further developed. But nonetheless, with increasing technology, I'm sure future Elder Scrolls games will be PACKED with more and more lore as the series goes on.
So what lore interests you the most? What do you want to see - besides other provinces of Tamriel?