I personally don't understand the fascination that seems to be sweeping the community as of late with Argonians and Black Marsh. I'd much rather see a future game set in the Summerset Isles, Thalmor/Aldmeri Dominion or Elsweyr, or even Akavir. I haven't read the books so maybe I have no room to talk, but from what I've read on the forums and picked up, they seem a bit silly. Morrowind blowing up and getting invaded by Argonians (note, I may also be biased because the Dunmer are my favorite race)? To me it just seems a bit ridiculous and I would have liked to have seen the lore take a different direction. Admittedly, I think Black Marsh would make for a cool place to explore given it's swampy/jungle setting if the technology permits for it to be done well, but other than that, I have no fascination with the region. This is intended for my personal enlightenment and for discussion, so don't flame.

I don't see Black Marsh being the next Elder Scrolls Region, it will be annoying to travel unless you play as an Argonian.

Black Marsh, more than any other region in the game, has the potential to be something other than a "generic fantasy" setting. After the lackluster treatment of Cyrodiil as a semi-LOTR fantasy forest, and now Skrim as a Nordic equivalent, the series really needs a move to a truly "different" location to save it from boredom.

My worry is that Argonia will end up like Oblivion. Skyrim seems to be fitting pretty well with the Lore so far, Cyrodiil didn't and simply changed it, and I'm afraid that Argonia's own interesting lore will end up being changed for the worse.