suggestions: 2

[javlock]

1 ) Make the display of the used space in the cache settings (to set the desired cache size):

2.1) Make a "route construction" / "manual addition of waypoints"

2.2) Make the map download based on 2.1 + deviation in longitude and latitude
(in gmapcatcher (it is not in android) it is possible to load only by 1 point + deviation in longitude and latitude)