Rationale
One of Hades' Star's design pillars is exploration. The magic of uncovering new sectors and discovering new stars revolves around that principle. However, as Andreas has admitted himself, the "wow" factor goes away pretty quickly.
Benefits and drawbacks
While adding easter eggs would increase the game's file size and require extra artwork and programming to be done specifically for non-gameplay elements, the game's eye candy is a huge factor that keeps new players attached (first impressions matter!). More important, players posting about rare Easter eggs that they encounter on various social media would help foster community activity and possibly increase the visibility of HS.
Possible ideas
To help convey the idea that the game's universe is full of undiscovered wonders, adding some small cosmetic Easter eggs could help, including: (please read these, I think these ideas could be good)
- Comets occasionally orbit around your Yellow Star in highly elliptical orbits like they do in real life (the apoapsis is far beyond the bounds of your solar system) , displaying large tails as they approach periapsis near your star. Comets would appear infrequently, every 1-6 months and last ~1 week.
- Lines of tiny civilian ships and ferries could be added traveling in between planets and space stations across sectors and on Warp Lanes. More ships would appear on routes that are more "busy", such as a Research Station filled with Artifacts or any location that has a Battleship undergoing repairs.
- Rare chance for non-Yellow Star systems to spawn as binary stars. This would have no effect on gameplay, since you can't move directly to a star. But it would be a cool thing to talk about.
- Binary star systems can spawn as a variety of systems: "Ordinary" stars orbiting each other, contact binaries that share a gas envelope, asymmetric binaries consisting of a white dwarf or black hole orbiting the larger "main" star and sucking up gas into an accretion disc.