When it comes to choosing between these two options, we currently have a bit of information on both topics. I don't think our current knowledge of the White Sky, or the greater Polar Nation, actually skews much one way or the other. As a basic example, the Iron King story we chose to hear about
was a historical tale, sure, but it revealed perhaps more about Polar Institutions and Governments than it did about Polar Culture. After all, the Iron King
was a King first and foremost, and the tale was told within the context of an institution that the Polar Nation doesn't want to repeat.
During the first contact meeting in turn 11, we heard about the Threefold Winter, Sudica, Fryja, and the Crone, but part of that tale was how Sudica formed the first great althing, which on Earth is one of the oldest parliament systems in the world. We also recently learned that Sudica became the Glittering City, the capital of the Polar Nation.
We heard Jaromila's tale, wherein her old clan mother and new tribe father fled the Glittering City out of love, and were harassed by Jaromila's clan even after they went all the way to the North of the rural White Sky province. Along the way, even before reaching the White Sky, they were graciously welcomed by many towns, before the ongoing harassment dried up their support, and the headmen were forced to ask them to depart.
What I'm really getting at here is that these topics are hopelessly intertwined, and we need all the information we can get our hands on, from
either choice. This is an interesting vote, but I don't think there's any particular reason to doomspeak about one choice or the other. And there's no reason to present one topic as comparatively underexplored, especially when they're both such large topics they couldn't be anything
but underexplored at the present juncture.
EDIT: forgot to mention that we know the White Sky very much value good wood, and need manpower much like the Wang do, as evidenced by the weregild and the assimilation of southern Cloud nomads, respectively.
EDIT 2: Take a look at this blurb, which provides the basic institutional structure of the Polar Nation.
Jaromila drummed with fingers on the tabletop, the metallic sound ringing through the hall. "The White Sky Confederation is the union of three great clans, in alliance with the Cloud Peoples. We answer to the White Sky Althing, and our Maiden Winter. The White Sky Althing and our Maiden in turn answer to the Great Althing and the Mother Winter.
Ling Qi was the one who responded, processing the implication. "The White Sky belongs to a larger group then?
"The White Sky is one of four confederations belonging to the Nation of the Polar Gates," Jaromila replied. "Under the guidance of the two hundred and twelfth Great Althing and the thirty second Mother Winter. But as you say of your Huang-di, the great Althing does not concern itself with such matters."