So, in my personal WRE mod, through semi-accidental marriage play, I managed to inherit a whole, united Germania (HRE that was renamed when I formed the WRE), which happened to control all of de-jure HRE, France, Brittany, and the parts of Aquitaine that I didn't already own--almost doubling my current realm size. Likewise, the late Kaiserin, my current Imperator's mother, had just turned Waldensian, along with half of her realm. Seeing as I just mended the schism, this means that I can revoke and rearrange it all as I please. >:3
Will post pics later.