I think this would be a nice addition to the game, especially for new users or those who sometimes get lost. Alas, if this wasn't implemented in the future, there is still map guides for the new update if you are in need! Friends are also a nice thing to have to ask them, too. :>
It would overall be more convenient and helpful for users. Traveling to different maps would be faster, easier and simple if implemented nicely. Lovely idea!