Significant relaxation of federal power is the only way USA and Europe can be politically stable over the long run, but good luck getting people to let go of the idea of federalism.
How so? The general public in the USA and Europe seem fairly docile, we've had massive political scandals on both side of the Atlantic over the past couple of decades, and the general public barely reacts at all (in any meaningful way at least, in terms of organising resistance).
You don't think the political events of 2016 count?
Consider what might happen if Clinton win and more corruption scandals appear about her, or if Brexit is halted somehow. Things are getting less stable over time.