Read this last night, and I'm intrigued.
I should say, didn't see the two deaths coming.
My predictions are that Richthofen's nationalistic/socialistic non-genocidal party comes to power in the Weimar Republic through democratic means. Richftofen's nationalism/fascism may be a little more like Mussolini's, to "restore the country to past days of glory" and all that. I can see him wanting to go to war as you said, but I definitely see him wanting back the Rhineland and ethnic German land like Austria, the Sudentland, and of course lands in Poland, all which Hitler wanted IOTL. An invasion of or demand for these lands will probaly trigger said war, which will be relatively minor compared to OTL's WWII. I can also see him getting in bed with the Soviets to see his "Mittleurope" come to pass.
That was a mouthful, but just my too cents. Consider be subscribed!
I await to see were you take this.