@Kirill-Šustov Yes, totally agree! I'd also very much also like to see this implemented into Mapy soon.
Just like you can see "Elevation" profile when you plan a route, they should add a "Terrain" profile section where one could find information about the planned route with everything you mentioned above and more... trail_visibility, surface, sac_scale, but also way types (path, track, road etc), as well as the info how long each segment of the way type of a planned route is: for example 800 m path, 1.2 km track, 200 m road and so on, along with details on how much of each is on specific surfaces.