Let's what-if a scenario where the Fed is made subservient to the President and the President wants the dials turned to 11, let the next guy deal with the consequences.
The dollar isn't indestructible. If not the Euro, what?
I was referring to Europe and america together -- and I think your conjecture is real -- what if we move to a projection of holographic economy over the real one. The answer is, whichever gets the most people to cooperate and support that holographic system will survive. In general collective weak systems tend to not work well there. But hyper centralized systems tend to over index on projection. Which is why we have the separation.
Probably a mix of things, including commodities like gold.