Thaumaturge
Wandering. Not lost. (He/they)
I want Maztica back, Dragonborn can exist but they can be homeless like other races (Gnomes) or they can take someone else's stuff I suppose.
This is how I'm ruling it at my table. My one dragonborn PC in HotDQ is playing a character who was away from home on a mission during the Sundering, and lost his family. Dragonborn in my FR are a people without a land. A diaspora of dragonborn looking for their place in the world.
If we get a campaign guide, and there is a place, then I can integrate that with some quests and roleplaying. If we get the guide and the dragonborn don't exist, then I can easily add in the above without much upsetting the applecart.
Thaumaturge.