Hi, nice to see someone new on the board!
OK, as Grant says no Wallis, no abdication, this is CS Canon.
Also, the king in Britain in the 1930s did not had much direct influence on politics. Yes it boosted moral, was loved etc...but the important thing to ask to determine the fate of Britain is: "Where is Churchill?" That is the determinant factor.
My take on that is that Churchill, after the great war, went back to writing. He is probably a very influent writer but not a politician. That would help play to the weakness of England.
Also the Germany of CS is not he 1930s Germany. Since the Kaiser is still there, the NS would have a though time to get the Prussian officiers to come on their side. They would be more likely to rally around the Kaiser, even if he is a weak figure.
Your take on the U K and CW is very intersting and not incompatible with the CS verse. The important thing, IMHO, is not the king but the absence of Churchill...
Malphas, over and out