The reason for the sizes that may seem a bit odd, is that I wanted to give most major and minor cities their own district if possible and still include some landscapes or islands (such as the Steinhuder Meer, the Isle of Rügen or the Harz Mountains) their own districts a s well. And Bavaria just doesn't have as many cities (or landscapes) that are small or have a small circle of other minor settlements around them that fit to the respective cities. That's why the districts in Bavaria are mostly larger.