Looking at the gameplay footage it looks like the compass will be like skyrim, where as you are bee-lining towards your objective you can just turn your character left and right and see where every undiscovered cave / town is located on it with a big marker. This just makes exploring pointless if you know where everything is before visiting that area. The explorer perk was great in fallout if at the end the game you just wanted to see what you missed, but unless someone tells you of a location and puts it on your map it should just stay clear. Or at least give us the option to remove those types of markers from the compass without modding.