A more 'realistic' scenario would be Swedish intervention in Finland/Åland in the wake of he Russian revolution.
Well you must be aware of the Swedish military expedition that briefly took control of Ahvenanmaa/Åland during the Finnish Civil War [FCW]? They left the islands when the Germans arrived.
Later when the debate about the ownership of the said islands was handled in the League of Nations, Finland was prepared to demand the northern areas of Västerbotten (belonging to Sweden) if Ahvenanmaa/Åland would have been given under the Swedish control. An escalation of that scenario could be used as a background, I think. Especially if the Danes would then make a move towards Scania...
I have recently accumulated some pics from the FCW, if it's ok for the OP of this thread, I can post them in this thread later on or then start a new thread for them.