Sorry for the stupid question, but since GoT Finale si coming and the new region is supposed to be based on medieval britain alongside a King/Queen theme, would it be too stupid to say that it could be based on Fire/Ice?

On some 'leaks' it talks about a struggle between traditional way of life and modern life, maybe a cold region in the north using magic and a region in the south using technology? (Celts/First Men vs Germanic and Romans/Andals).

The King (in the North) and Queen (in the South) is a main theme in this season of GoT too. And Fire and Ice make for a good duality and also follows the Red/Blue pattern since Gen 1.