I would like to suggest adding a button that allows the currently planned route to be temporarily hidden at any time. The reason is that the visible route covers the underlying road colors, which are important for identifying road types, making planning more difficult.
The feature could work similarly to the “show password” function in password fields: an eye icon that, when held down, hides the route and shows it again when released. This would allow users to quickly check what kind of road the route is on.