I think I can put Tymanther somewhere in the Shaar. The vast savanna-like grassland has room for a kingdom of Dragonborn. Better than putting it in Unther, by any scale.
Either the Western Shaar, or the Eastern Shaar, I still haven't decided yet.
Too soon, my friend. At least allow the wounds to heal a bit. I know people here disliked the place because of its 4e origins, but I was invested in Tymanther as it was (in the area it fell, not in some plains nobody use because they are utterly boring). I'm still sad about the way they destroyed it (as if it was something irrelevant).
Instead of seeking change, you prefer a void, merciless abyss of a world...