Asteroid belt in the star system

could be nice to be able to mine asteroids in it to get some rare ressources

Still dreaming of void ecology that lives in asteroid belts so yea that would be a big plus.

Now that we have destroyed planets which we can un-destroy into Lava planets...

These ideas could be rolled together. Asteroid Belts get seeded as a rare planet type - can be engineered by Behemoths into a barren planet the way a destroyed planet is engineered into a Lava planet.

Add some system improvements that give industry or science for asteroid belts. (Asteroid belts obviously have to take the place of telluric planets but I don't think this matters since the gas and telluric planets are jumbled together and don't follow RL physics anyway.) Have a couple different types of asteroid belts that give different bonuses when "mined."

From a design standpoint, something in between a gas planet and the way moons are implemented, with a late game option to create a tiny/small/medium barren planet. I suppose you could have very large asteroid belts, but that doesn't make sense because they would have formed into a planet if they had that much mass.

at this point endless space 2 is endless. So many gameplay possibility...