We all know the Schiefflin Plan was more or less Germany's contigiency plan if war broke out between them and France/Russia, but what they did was execute a modified version of, the original called for an invasion of the Netherlands...however, it was called off as being "too risky" in angering too many neutral countries...so, what is it that is stoping (or what kind of a PoD would be needed to get) Germany to forming some kind of agreement with the Netherlands to help with the Invasion of Belgium, they offer Holland Belguim's colonies, some border areas, they could also give Luxemburg some border areas as well, it would seem excessive to offer all of the Flanders but who knows?