This is really interesting! And sounds like it would make a fascinating novel, rather more so than actual!FW -- FW sounds like a much more interesting person in the novel than he actually was in real life. I do understand a lot of why FW did the things he did, but... ugh, he was just consistently awful, to the extent that for the first many months you guys would tell me stories and I'd be like "what?? how could he be that awful??" until I just learned to realize that that was the way he was. So it wouldn't be very interesting to read about as a novel, I would think. Of course, some whiplash as well for people who know the history, though...

I really like that idea about Katte as a replacement sacrifice like Isaac -- not as a historical idea, which it clearly wasn't, but as a novelistic idea -- it's sort of something that I could see making a weird twisted sense at the time while being wrong, if that makes any sense, which is also kind of my jam :)

If it were translated into English, it looks interesting enough that I'd probably give it a shot, but I think it will be a long time, if ever, until I could read fluently enough in German for that, and I have other things I'd want to read in German first :)

But I hadn't known that F1's oldest brother was, in fact, called Karl Emil.

Oh! That makes perfect sense now :)