Germany should use Mark as the alternative currency

EURO has been a strong currency since its birth about a decade ago. It helped the EU countries to keep the smooth payment over the trade within them. But, the currency is still young. Spain and Greece economic crisis threaten the well-being of the currency in other countries. It could be just one temporary crisis and it may not happen again in EU countries.

However, we don't know what will happen in next 10 years. What happens if Greece or other country cannot find a economic recovery? Helping the county will hurt other economy within EU.
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EU seemed to a success comparing with EC, which was a failure in the past. We must learn from the history, and the EU countries must develop a safe guard for keeping the economy in both macroscopic and microscopic levels.

I would suggest the EU countries to set up their 'regional currency' to be used within the country for the local merchandises. And for the country-to-country level trades, people can use EURO. The travelers should be able to exchange EURO in relatively easy setting like 1:1.5 or something. If the country is not doing well in exports nor imports, the country may not create too many EURO. This system will help the weak country to get sometime to heal its own economic instability.

If you want to know about my suggestion, please study the economy of Bosnia y Herzegovina. They use Mark as the country's currency, yet most people use EURO as an alternative currency, and the exchange ratio is about 100:50.