When calculating a route, I can select the kind of route (fast, curvy, and so on), but this setting holds for the entire route.
What would help me a lot would be to override the kind of route per waypoint.
That would allow me to cross quickly very dense area (big cities), and to choose nice curvy roads once in a a cool area.
Currently, either I have to manually adjust the route, or to create different routes and load them while on the road…