Such a halfway house – call it “depreciation without departure" – would avoid some (but not all) of the problems of a country's complete withdrawal from the eurozone. It would create its own set of incentives, which, on balance, would pressure individual countries to avoid demotion, just as top-tier football (soccer) teams seek to avoid relegation to the minor leagues.
最后，欧元区应该采取汇率浮动的“双轨欧元”。这一思想由美国经济学家艾伦·梅尔策（Allan Meltzer）提出。必须制定系统新规则决定哪些欧元区成员国降级使用“B级欧元”或可升级为“A级欧元”。这一过渡制度——可称之为“不脱离的贬值”——可以避免一国完全退出欧元区所带来的一些（但非全部）问题。这一制度可以造成一系列激励，从整体上向个体国家施压使其避免降级，一如顶级联赛的足球俱乐部寻求避免降至低级别联赛。