This is more of a game feature..but I'd like to see a blank map that shows no planets at all until they are discovered. For instance, one way to populate planets on the map is to first spot them with a kerban based telescope. This would then lock in coordinates of a "generic type body" on your map with a very vague description. Then, once a satellite/probe is sent to the newly discovered planet, your map would be updated with more detailed information such as planet name, mass, ect... Another way to populate your map is by just sending out satellites/probes and stumbling upon one.
