Actually, I think it's a nice concept, because the country respects the identity and autonomy of its components 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.
I leave them using what they want, in 10 years there are only 500 users for the local currency in my region... Maybe nobody see any point in using this currency either.
For me, who am in another country where things work completely different and people have another traditions and cultures, it's hard to say why people there still embrace regional currencies, but it must have a special meaning for them, otherwise they would have already abandoned it a long time ago, right? Or do you think people in your region are forced to use those local currencies by some kind of regional ruler or oligarch?
Why do you think nobody sees any point in using these currencies?