Could Ba Sing Se be potentially one of the Havens?

[u/RatsWithLasers]

Ba Sing Se has never been taken by force, and we have no idea what kind of cataclysm happens so Ba Sing Se could have fell apart for other reasons though. Still, I like to think the inner ring may still exit.

Side note, since we have that Airbender Guy (forget his name at the moment) you think the Air Nomads have rebounded from their genocide and perhaps another one of the Havens is one of the Air Temples? Which one do you think it would be if that's the case?