The only agreement that would change things is adopting the
Austrian school of economy teachings and stop everything they have been doing until now. Since i don't see them using actual gold as money, Bitcoin is the perfect solution for the world.
As long as they keep the Chicago school dogmas, nothing will ever change.
Opposition to this is immense, as it would necessitate the ending of the legalized ponzi scheme known as fractional reserve banking, and true money that doesn't lose its purchasing power overtime is money that people can hold for themselves, specially when its virtual and easy to hide and secure.
Thus, banks become far less useful, and that is your whole financial industry that is going to oppose this until they can no longer do it. Some will embrace it, many will close because they are redundant in the new post Chicago reality.
When the world understands and applies Austrian economics, you won't need banks, central banks, continental banks or world banks. People today think a Bank is a necessity because nobody is teaching them about that other kind of economy where rather than getting in debt to invest, you save from your own effort and then use that. If you think that should be obvious, your gov certainly doesn't.
Growth with an Austrian style economy is slower and everyone is scared to make the first step and get eaten by all the others in the global economy, but with time its steadiness shows when the next crisis hits the others but that place practicing Austrian economics remains unaffected. Like Bitcoin.
Want to end bubbles and crashes forever?
Go Austrian!.
Now who is going to propose it first? Your cowardly politicians that would lose even more power? The very institutions that would become redundant?