I guess if a country supports crypto currency then i doubt that they wouldn't create their own coin so they can manipulate it themselves. As for an ideal world. I'd guess that it would be a load off their backs and pricing for goods wouod be different. I guess we will see a total overhaul of a country's financial system
implementation of new systems and technologies such as crypto and blockchain will impact many activities in a country. but if the new system makes the country better, then crypto will be fully accepted