It's always annoyed me that Jutland, despite being attached to Germany rather than the Scandinavian Peninsula, is part of Scandinavia. How can we make it not?
I'm thinking it might work for it to be part of the Frankish realms...
Thoughts?
Oh dear - annoyed!?
But actually Jutland's Scandinavian connection is quite natural, we just have to forget our present times of highways and railroads.
In prehistoric times Jutland was separated from the continent by dense forrests and swamps making landward communication to the south rather tedious. The Scandinavian peninsula however was just across some easily navigated waters, and as every village owned a ship, Jutland and its inhabitors naturally became part of Scandinavia.
So for PoD's we could start with changing the landscape of pre-historic Holstein into an open plain - that ought to work.
A much later PoD could be 1864. Here the Prussians and Swedes apparently had some degree of contacts about a partition of Denmark - with Prussia getting Jutland. That would however not be a permanent "solution" - the idea of Denmark as a nation was long since born and both Prussia and Sweden would have troublesome years ahead.
Regards
Steffen Redbeard