In eu4 each graphical culture group gets unique building icons in the interface, Now that recently they showed custom pop icons for graphical cultures in the Inca Tinto Favour I think something similar could be done with the new building icons even if they are more simplified than they were in eu4, I honestly believe it gives a lot of personality to each country, and it would be jarring to play as say the Inca and the building icons be of traditional European architecture, some examples from eu4:
Here are some examples of how it could look, (Egregious use of AI to illustrate my point):
European (Original):
Easter Asian:
Arabic:
And so on and so forth.

Here are some examples of how it could look, (Egregious use of AI to illustrate my point):
European (Original):

Easter Asian:

Arabic:

And so on and so forth.
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