The single largest omission present in Google Maps Go (and, in part, Android Go) was the lack of proper navigation support. If you tried to use the app to get turn-by-turn directions, you were pretty much out of luck, as it would just point you to the more fully-featured Google Maps app—basically defeating the purpose of a "maps" app, in my opinion. Well, Maps Go still can't do navigation, but Google has seen fit to break that functionality out into yet another Go app: Navigation for Google Maps Go.