With the recent patch a new culture was added that covers factions throughout the entire Balkans, with the Culture being called "Balkan Culture".
I have to honestly say that I find this to be a somewhat lazy approach.
To categorise all these factions as "Balkan Tribes" makes somewhat sence, but culturaly there were certainly far more differences.
Should there be a seperate Illyrian culture, Dacian culture and Thracian culture whilest Tylis regains it`s celtic culture?
I dont think that CA will bother to change that, but it could be done via mod.