Not OP but, EU economy is being squeezed by China on the industrial and tech front, and by the US on the innovation/startup front. It is clear EU is no longer at the technological/economic frontier like it used to be 10-20 years ago. At the same time there are serious demographic, budgetary and political challenges all across the continent. Dragi's report covers some of these. It feels like the whole system might fall into a crisis soon if measures are not taken
More likely it just slowly declines like Japan. Or if anti-migrant sentiment continues growing at the current rate, it breaks into a race war when the AfD and PFN win the majority of votes in Germany and France respectively.
Factor in that Europe is powerful partly because of its unity and there are many forces trying to undermine that.