The current crisis also demonstrates the importance what the IMF has been underlining for quite a while: that regulatory and supervisory structures must follow the reality of the financial markets. As national financial institutions merge into multinationals, financial supervision must follow. There is a lot of work ongoing in this regard, and the financial crisis has given this work new impetus.
As I said, the eurosystem is agnostic about the international role of the euro. Global usage of the euro is not policy goal. That said, the euro does have several strengths as an international currency. There is also work under way, aimed at improving the single market, that should, as a byproduct, make it an even stronger contender.