That is a problem. Our UPS driver has his own map of the area because there are so many addresses that don't map. I doubt gigster type is going to put in that much effort.
Shame that the company that uses the system seems really protective of the idea and might try to sue if someone were to come up with their own similar implementation. It's one of the places I believe that the profit motive actually gets in the way of innovation (the idea itself is simple enough that you could probably engineer a system to use it in a few weeks).
However, although it has been around since 2014, I've never seen any practical use.