It is good-sounding premise for an RPG/RTS, but I don't see how the Elder Scrolls lends anything to it that a unique fantasy universe could not -- other than a sense of familiarity for Elder Scrolls fans, that is.
The ES universe would be fun because like you said the familiarty and rich culture/history already created, also you have different species but the factions are not necessarily between races like Starcarft or Warhammer.
Do you mean something like "Total War" only on a smaller scale and you actually control the actions and the levelling of the family members?
If that's what you meant, it might be cool as a TES game, not TESV though.
It would be cool if there was a campaign map, where you act as the ruler of the kingdom and do legislature and battles. Then also a game map in which you play a specific character and the terrtories and cities you visit in the game reflect what you do in the campaign map.
And you can switch back and forth between them. Depending on whether you want to conquer and build the cities, or play in the world you build.
That's so unfeasible, but it would be so cool.
I was thinking smaller, a capital city, a few towns and several outpost, but have the campaign map like you mentioned where you could zoom in to NPC view on a farming settlement to watch/guide it. The battles would be smaller scale like Mount & Blade ranging from raids of 1-10 NPCs to battles of a few hundred.
Civilization, not Total War. I like Total War, but the formula wouldn't give justice to culture aspects, which are really what set TES apart from Heroes of Might and Magic - which isn't rts, but I can't think of a 'fantasy' rts at the moment - and so on.
I was thinking of the land improvements like developing roads, farms, mines or a city wall but your comment made me think of the great wonders in Civ. For the smaller scale of the game it would be cool to make little shrines or temples that added blessings and etc.
I agree with others wanting Beth to focus on TESV and anxiously wait for its arrival. I would also love for someone to try their hand at a smaller more personal and full rts/rpg. Mount and Blade simple and a lot of fun, add land/city improvements, discoveries, a lush Oblivion/Morrowind land and a ES universe and I think I would be in heaven.