Frederick William IV of Prussia was a hardcore Romanticist, and the one of reason why he refused the Crown of Germany in 1848, besides calling it a "a crown from the gutter", he had Romantic aspirations to the re-establish medieval Holy Roman Empire, and would only accepted if the a re-established Prince-Electors elected him. So what if, instead Frederick William IV accepts the crown, and becomes German Emperor in 1848, then proceeds to lock up any liberals involve with the Revolution, and re-establishes the Holy Roman Empire, making the position of Emperor back to a Elected by only new Electors. How would the German Kings react? Would they accept to become electors? Would they become candidates for the HRE? How would the Habsburg react to this declaring re-establishing of the HRE? How would the rest of Europe react to this development? Could this Re-establish HRE survive? It’s basically the German Confederation all but in Names and system.