@dreamer_ when you mention beacons, do you mean course markings - that is how it is called in United States - usually a combination of turn signs and ribbons to make sure that you are on the course.
I still use navigation for two reasons:
To have elevation profile, climb guidance, and distances to aid stations.
To boost confidence in case I haven’t seen course markings for some time. Also, occasionally, course markings get tampered with or blown away by wind.
Perhaps, during a race I spend less time on the map screen and more time on the elevation profile, especially now that it can also show distances to upcoming waypoints. So in a way, the elevation profile is almost equivalent to Garmin’s Up Ahead feature (but sadly without waypoint names, which I think Suunto should add).
But during a long training run I spend more time on the map screen because I tend to have a unique route for each long run that is specially tailored to my distance and elevation goals for that run.