I hope you're right. Because if the Euro succeeds, all those US Dollars currently being used as "the world's default currency" will make their way home. The US economy could use a little stimulus, but not THAT much!
I'm a little concerned that should the Euro really become the accepted currency of all 12 of these nations, we're going to have way too many dollars floating around the US economy.
and I'm a bit more concerned that almost no one else seems to be talking about this part of the story.