Awesome! I only found a few special signals before I started to notice only getting duplicates , alas, I am afraid of looking into the wiki. I think that would be the main potential advantage of interactions with the scientists- reducing reliance on the wiki. One of them could off-handedly mention in their letters that one of the persons who preceded the player would never find any interesting signals, alluding that they may have hidden a few of the spicier ones somewhere. Or the scientist could complain that they had requested a signal from a specific star multiple times, but would eighter get no reply, or would receive a signal from the wrong object.