If we're going to Tevinter... I think they should try "DA:2 - done right."
That means... you are confined mostly to Minrathous and the surround countryside... that the story is more personal with great world events transpiring in the background - that your story can shape Tevinter itself (mostly meaning policy) and how Tevinter itself will proceed in the future... and at the end you become an important member of Tevinter society.
And then... I actually want DA:5 to break the mold and have us play this character again. Now... with power (we'll call it: "Inquisition done better.")
I'd prefer "human only" - and then "Altus" member of society. That leaves us open to a tighter story... with personal agency of the character.
Problems with certain types I forsee:
- Slave. A story about freeing Tevinter from slavery would be absolutely horrible. That's not how slavery is stopped... a slave rebellion story should turn out just like Spartacus. Why would ANY slave be a warrior/rogue? Fenris is an almost totally unique situation - and while repeating it wouldn't be the end of the world - it would be poor form I feel.
Also - people don't really want to explore what slavery is like. So while Fenris was abused sexually and physically by his master... I think most players would riot to have these elements.
- Elf. Honestly... Tevinter elves taking center stage? Poor writing and fan service.
- Dwarf. Might not be "as" unbelievable... but still just fan service. I believe there's something called the Ambassadorium and that dwarves and Tevinter get along quite swimmingly... but a dwarf "leader"? No.
- Qunari. Does this even need to be approached. Sure... Tal Vashoth, but it's a terrible idea to allow a Tal Vashoth lead Tevinter to victory against the Qun. It's not clever, it's not poetic or ironic, it's just... a crap idea.
So... perhaps the game will be "in" Tevinter... but not deal "with" Tevinter as in... "your character is important to the political, social or economic scene of Tevinter." In that case... everything opens back up, but I think the stronger story lies with a tighter restraint on what's available.