Yeah, it was actually kind of disappointing to understand that after buying the subscription. I mean, Google Maps coverage is far from being complete as it is (and obviously is not going to be in the observable future even for places where it technically could be, like most of the China), and if you are playing the game to learn something, being just more playable in duels is not what you want. New places appear from time to time, so I'm not completely sure if they do that on purpose to make game easier, or there are some real reasons to do so. And if it's ever going to be better.