I don't think it would stabilized the economy of some third rate country that had slow economical growth especially on Asia and Africa were their primary sources of income are agricultural products. Whose investor wants to pay 1000 usd per employee?
They are applying and making agriculture products to use for the economical needs of the country but I think single currency will not be good for the profit of simple people. As now crypto currency is invested for long time profit but it is also being use to pay for online goods it means a currency can be use for purposes, investment and the currency. Money making through currency will be the part time profit.