Once you have a currency that isn't controlled by any one single government, then they all have to behave themselves better with respect to financial management

Once you have a currency that isn't controlled by any one single government, then they all have to behave themselves better with respect to financial management. That is the real point of one of these schemes - to make all the governments more accountable through the global economy. If you have a gold standard, then when a country is badly managed, much of the privately-held gold naturally flows out of that country, punishing the misbehaving economy. Likewise well-managed economies tend to have large inflows of gold. Governments hate this because they're in the business of having the final say in their respective geographic regions of control.