Now, Heinrich never had any reason to believe he would be king of Prussia, right? I could totally imagine him being the sort who isn't going to go after power that he doesn't perceive of as his right/duty, but at the same time having Lots of Opinions as to how that power should be wielded.

"Guys, I've just had a vision of the future, and if we don't go for constitutional monarchy, we'll end up with an orange blob as President. So, here's what I'm thinking: how about the cousin of the guy we just got rid of, who has never been here, so won't be partisan, is gay like me, so won't found a dynasty, and who's really into French so might want to change that into our offficial language?

Heeeee.