Unique Abilities and Perks for each Civilisation/Empire

[PiePants 57]

Should countries/civilisations be provided with unique bonuses or perks, akin to what you might see in other 4X games like Civilisation, ARA, or Humankind? E.g., 20% production bonuses from certain buildings, more income from trade, army generals do 25% more damage, unique buildings, military units, and research unlocks etc. 

I'd love to see these sorts of things in AOH3. My worry is that without anything unique to each country, province or civilisation, there won't be much difference in playing each nation, save for the starting size of the empire. Playing as France, Australia, or South Africa in a Modern World shouldn't 'feel' the same as each other, and shouldn't feel the same as playing as Rome, Byzantium, or Greece in a more classical age, but without something unique to each civilisation, I wonder if they will feel the same.

Let me know your thoughts on this idea below - I'd love to know how you would want civilisations to 'feel' unique.