Do you see a stage being set for a world war like never before ?
Nope...never again! In the EU there will be no other war ever again. I'm totally sure of it.
I can't give honestly a promise for the Balkans or Ukraine or other "outskirts" of Europe, but not ever between members of the EU.
Every year the countries inside the EU interconnect and mix so much more on the economical and human levels, even if the politics often don't mirror that, that war would be totally senseless, and self-destructiv for every one. It would be like kicking ones own balls...there is just no sense in that even more.
About a world war I'm not sure...who against whom?
Today almost all nations are divided.
Today in the EU most bitching and fighting happens over desks and through the media, not through weapons.
Germany is just seething at this to create their new HRE.
You are repeating yourself but I'm still waiting for your explanation....why did you choose the HRE as warning?