Just an idea to implement some sort of sandworms (think Dune) or Ohm (think Nausica).
I get that space engineers is supposed to relatively emulate real space travel, but it might be a nice feature to toggle in the map settings.
Giant space creatures would be cool to have to defend against:
On Mars and Titan etc. Giant sandworms gulp up spacecraft and stations that are built on sand instead of rock. Maybe include a vibrating camera effect for people in the ground in the vicinity to warn of it's coming.
Or, a herd of giant ohm (rollypolly bugs) plow over buildings in much the same way.
On asteroids and certain moons, perhaps a similar creature with a different skin texture, or mynocks. --I mean we have spideroids, so why not a few other space hazards?