Well, unless I remember wrongly, there was a medieval king among whose titles were explicitly "king of Scania." Now as a Scanian, of course I think it would be cool was Scania over the centuries to develop into considering itself its own country, like Denmark, Sweden or Norway. It certainly would be interesting to see if an independent Scania could survive.
Nonetheless, I doubt that Scanian affairs would have much influence on anything outside of Scandinavia. Inside, however, it has shown itself remarkably capable of igniting wars.
A no Kalmar Union scenario on its own on the other hand...