Broadcasting navigation instructions (i.e. all the instructions and updates normally shown to the user while navigating), and receiving things like pause and continue navigation might help with integration in other apps. Not sure if this should be in Pure Maps, or even in in OSM Scout Server. My goal once was to get navigation instructions on my Pebble, while biking. It's unfortunate development of Pebble came to a halt, otherwise I reckon it would have been quite easy to implement on the Pebble's side. Still, with a DBus-interface it would still be simple to create a QML app which translates the instructions to normal notifications, which of course are shown on Pebble and other smartwatches.