Actually, I think it's a nice concept, because the country respects the identity and autonomy of its composing regions. I would like we could have more independency like that inside my country, so each state would show to the rest of the country its own way to rule the territory.

OP, it's up to your countrymen to stop using their regional currencies for Euro or Bitcoin. Let them be free to decide what they prefer. Bitcoin is about privacy and autonomy each individual has, so let's make it be real even when deciding to adopt BTC or not.