There was a Times comment column suggesting this...
Would allow them to take some fiscal policies the Germans are unlikely to go for. Would be a far weaker currency, but might not go bang. IIRC actually they were suggesting a "Northern Euro" with the scandies and Germany, and then the rest stay in a "Southern Euro".
( prince-igor si tacuisses, philosophus mansisses, Thu 14 Jun 2012, 9:24, Reply)