My previous post pointing out unclear on-screen navigation instructions in KDE’s Marble application was criticized for not providing a better proposal on what an improved screen could look like. I’d like to follow up with this now.
In the first screenshot, I have added notes with recommendations as to how specific elements of the navigation instructions could be improved. In the second image, I have put together a mock-up of what I think an improved screen could look like.
Feel free to suggest further improvements in the comments below.
Advancing Usability 
I have never seen a world map on such a device. What’s the purpose of it anyway? I think that it could be removed right away to reduce the distraction on the screen.
Hi Markus,
Thanks for your mockup. Now we need somebody to adjust the code accordingly.
Michael: We consider removing it during turn-by-turn navigation. I think the overview map could be useful if it would just cover the current region and the full route. Any further feedback appreciated 🙂
Instead of the world map, a total (or at least wider) view of route could be given, for better orientation.