It would be amazing to have something like a Hall of Heroes with tapestries or something showing fallen heroes as you find them. For example, you find this guy on the moon. You then head back to the tower and into the Hall. You then see a large tapestry hanging from the wall with an image of the guardian with his ghost standing at that hive entrance. In front of the tapestry is a pedestal with the little ghost you found and a plaque that can be read that tells about who the guardian is and what his mission was.