Some things to improve, mostly in gui (my personal opinion):
- the image for the icons for car, bicycle and pedestrian should increase in size. In small devices like mine it becomes hard to see;
- The icons for the options (map source, config screen, poi, poi labels, favs, etc...) are all monocromatic. It would be better to add some colour to them so that we could better distinguish them at a glance, especially if you're riding a bike with sun glare on your screen. The sane goes for the icons on the search zone. Also maybe add different icons for the different poi
- the flag for destination is also thinner than usually and harder to see. Maybe make it bulkier.