What do you think are the chances for this happening in our lifetimes? I'm not optimistic.
I'm not optimistic either. If there is to be any European revival, it would have to be either in smaller states (like Poland) or in provinces of larger nations (like Bavaria). The "nation-state" itself was usually some sort of gerrymandered entity cobbled together to meet strategic needs. It was, in this sense, a stepping stone on the way to more comprehensive integration in the EU and ultimately in the NWO.
What could happen is that the One-Worlders might cultivate provincial separatist movements as de facto allies and accomplices in destroying the existing nation-states. If that were to happen, then who knows?
For example, if Bavaria were to become an independent state, I have a feeling that it would be a much bigger headache for Brussels than is the current Bundesrepublik.