As the title say, I propose that probes reveal only the number of planets around a star, by showing only their shapes when in probes range. And with tech probes could be improved to reveal all the planets natures as it is now.


Why?


Because this way :

- you encourage a little the direct exploration with a ship

- you add some interest in the colour of the star (as at first the player would only have this hint)

- you can add a tech in the tech tree


This change would improve a little bit the exploration by teasing the player curiosity, and thus the exploration fun!