Seven trains that the PCs might one day need to travel openly on, sneak onto, wreck or rob,
There are a myriad of trains that run on the ley lines all through Vallermoore, delivering passengers and goods to their destinations, but they all have to give way by Law when the Royal War Train comes through.
What about a 'criminal' society with distinct laws - for stealing, the larger the value of something stolen, the less punishment the courageous thief recieves (but must return it of course). For this pirates(?) caught petty thieves deserve to be punished harshly. If you take, you better take a lot.