1.) Greece should go back to their own currency. The euro has not been the best engineered currency out there. It has been affiliated with multiple economic break downs in the past as well as in the present. The only problem is the cost of them leaving the euro. Will the other eurpoean governments allow them to?

2.) They probably will if they go back to their own currency. At least with that, they're not relying on other countries. They're not tied down to other's inputs. This would also be possible if they reconstruct their economy and be more firm with the taxes.