A couple use cases that I'm still waiting for on mapping applications:
- I have a bike, and a pass that gets me on any local bus or light rail car. Busses and light rail cars can carry people with bikes. What are the best two or three route options from point A to B using some combination of bike routes and public transit?
- I am already following a route to get somewhere. Suddenly I decide I want/need to stop at a (gas station | cafe | restaurant | other). Make it easy to find such a place (optimizing for not taking me too far off my route, and doing it soon if it's a long route), add it to the route, and don't forget the original destination.
Google Maps on Android seemed farther along than iOS last I used it, but neither really handled these use cases well, last I tried.