If you'll allow me to jump in for a moment, the issue with restructuring Greece's debt right now can be found in the rigidity of its european partners.

And while you cannot always agree with Roubini, I've to recommend his latest article: Eight drastic policy measures necessary to prevent global economic collapse

Also, there was this analysis in zerohedge two-three weeks ago on the slightly desperate report assessing the Eurozone put out by UBS (Euro Break Up - The Consequences): Bring out your dead -- you can find the whole UBS report enclosed at the end of the article.