The low transaction cost of money is partly a result of how deeply embedded it is in our social and institutional practices. I don't think it is an essential feature of money itself; other practices might come to fill similar roles. I would also suggest that the opacity of traditional currencies to certain forms of value also has a crippling effect on our economy. Economics talks about these as "externalities", but they are best understood as values that aren't represented in our trades. I'm not claiming that Strangecoin can capture all externalities, or even that it catches the important ones, but only that it captures some dimension of value that is hidden in traditional currencies.