Here is an appeal to all those brilliant minds: the Greek debt is not going to go away regardless how smart the technical solutions are. On the contrary, the foreign debt of Greece is going to rise going forward; it cannot decline (unless the discussed haircut comes through but even that will be but a drop on a hot stone). So why devote so much brainpower to something which has no near-term solution instead of applying it to specific proposals as to how the Greek economy could become strong? The stronger the Greek economy becomes, the greater the likelihood that more Greek debt can eventually be repaid (or rather: refinanced in capital markets).
The appeal is: come up with proposals how the Greek economy can be transformed into a value-generating, competitive market economy, and grow! One such proposal is here. Come up with many more!
One could argue that no growth plans for the economy can be implemented before the debt problem is solved. True. But keep it simple!
My suggestion: commit to the holders of Greece’s sovereign debt that, say, 10% of government expenditures will be allocated to interest payments over the next 10 years. And then let financial engineers work out combinations of amounts/tenors/interest which can be supported by that amount of interest payments.
Growth is the answer to most debt problems!