I usually add a single route at a time, for example a variant that I may have created to cut, or the possibility of not knowing in person, but only through Google maps, for example, the possibility that there may be closed roads, or that maybe they have been reopened and Google still gives them as closed etc etc... and having the possibility of being able to decide only with a glance, but also being able to keep the gpx track under the itinerary so that if the wrong road I notice it immediately! Anyway yes, they are doing a great job! I used tomtom first and then garmin, but for a couple of months I use MRA for all my outings, and I feel really good, yesterday my friends were surprised to be able to modify a route on the fly and find it immediately in the navigation app...
