TES has always been about Tamriel, and it should remain that way, sure include more akavir stuff, why not? but dont completely remove us from the world they've spent so much time establishing, might as well be a new franchise...
have akavir find out about the return of the dragons and the dominions plan to end reality, so they'd be all like "WOAH NOT COOL!" and have them invade tamriel again, makes sense and you can add in akavir stuff that way.
Not to mention that by the time we start revisiting provinces, it will be many hundreds, possibly thousands of years after we were previously there, so who knows what could of changed between now and then.
My name is John Johnson, but everyone here calls me Vicky.
I'd like to know more about the other continents, but I don't think I'd want games set there. There's no reason they couldn't just go back to different provinces at different times. I'm sure a game set in 4E Morrowind would be a lot different that the Morrowind we have now.
Its like having a knitting contest between the best regular old lady knitter in the world and a guy who's superpower is specifically to be the best knitter ever