I believe this is a feature that should be added.

Right now there is only the possibility to add addresses and not GPS coordinates. Only workaround is too add a new custom field, unfortunately, this is not a great solution.

In developed countries, addresses are almost always locatable. Unfortunately, this is not the case in the rest of the countries. In mine, it is almost impossible to do it using this. We have to use the GPS coordinates. The idea is that the trucker when he has to make a delivery he can use the GPS coordinates in order to find the exact spot. 

A mini-map showing the location on the client detailed tab I feel would be a great solution. Being much more visual and great for the one that is operating the software.