Same here. I am leaning Nord or Dumer now but if Valenwood really strikes me as amazing I will likely go Bosmer.

Ald Cyrod.

I want to check out Balmora, as well as Skyrim in general and Elsweyr.

The Imperial Throne Room, if you're catching my drift.

Hammerfell

Morrowind being my favorite game in the whole wide world, I am quite excited to visit all of my favorite locations in Vvardenfell (assuming it can be visited. I remember a tidbit in the Lore stating that Vvardenfell didn't allow outsiders until well into the Third Era, but I'm sure they'll retcon that somehow): Vivec, Ald'ruhn, Tel Fyr, etc.

I've also been dying--since TESV speculation began following Oblivion's release--to see Elsweyr. Its desert-jungle duality and the sheer alienness of Khajiit culture makes me excited to visit the place. If crafted carefully, it has the potential to evoke the same feeling of three-dimensional alien wonder that Morrowind did.

these two places i would love to see the most

I would like to see Black Marsh but I think ZOS will probably do that after Beth does BM. I can't wait to see Morrowind again. I don't think it will have the exact terrain as in Beth Morrowind except for the major landmarks like Red Mountain and whatnot.

definitely Black Marsh.... also, will TOS online be for Xbox, or just PC?

That would either mean the next TES is set in Black Marsh, or this MMO will last 10 years... hmm, I think both variants are very unlikely. But yeah, Black Marsh and the Argonians is what I'm impatient to see as well.

I am most excited to see my own fort (or my clan's fort), and am as much excited to watch my enemies burn it to the ground.