Since I still have some goals to complete, it's time to expanding once again towards the east.
Using Berlin as my next hub-city, we're going to add several cities in the Prusian and Poznan region to our network.
Only to discover in near the end that I somehow managed to cross my tracks in a wrong way, making it impossible to complete the route the way I wanted to.
Still, with the new cities added, one of my goals has come closer again. Which means it won't be long before I can focus at the ones I personally had set.