It would be helpful to show in the Navigation panel whether or not a planet has been mapped. Currently, (post Chapter 4 drop), using the Nav Panel to determine the best order (closest body to head to next) to map planets, you also have to view the System Map to determine whether the planet has already been mapped. If there was an indicator, much like the blue "landable" icon that appears in the Nav list this would be much easier/faster. Previously, when determining the optimal order to scan planets, the fact that an object was "Undiscovered" was the clue as to whether or not you had "been there" and one could quickly determine the next place to go to continue the system survey, having such an indicator would be ideal.