Oh absolutely I wouldn't want EVERYTHING to be spoon fed....but there are occasions when a marker would make sense and improve QoL. If we know the co-ords we want, then a manual waypoint would be fine, same as if we're heading to a crash site with an active transmitter. If we're hunting for a hidden base with an active transponder or something then the existing method of finding it is perfectly fine...mission marker points you to roughly the right area then you gotta search for it - in fact I'd argue the current method is a little too easy as searching just involves pointing your ship at the marker until it moves and it'll keep moving until it takes you straight to it.
+1
IMO, a sort of mix 'n' match would be great. The first explorer 'finds' an interesting POI using existing methods (and/or new ones, such as a ship wave scanner), then drops beacons as markers. He/she can then share them (or sell them?) so subsequent visitors can just follow the marker.
It both makes things easier for general players, and adds some value/gameplay for explorer/pathfinders.