I was thinking that a mission that would be quite neat would be if there was a second Charon Fortress, perhaps secreted away early in the game (something to avoid). The fortress would be much tougher than the one in Charon, not necessarily with better weapons, but superb shields and armour (can stations even have shields?).
You could recieve a mission from Korolov shipping after they rebuild their base, or perhaps if you manage to protect it from the initial onslaught and they provide you with a large barrel of explosives marked "Thanksgiving" or "Guy Fawkes" or something clever. The only way to destroy this legendary base is by either mashing it with incredibly high-powered artillary (the likes of which you won't find until late in the game), or dropping the barrel near the base and shooting it from a safe distance, which blows and either destroys the base outright in a massive explosion, or (prefered) showers the base with toxic radioactive debris.
Fun
I don't have any idea how to code these things, but I thought I might throw this one out there for someone to pick up.
The idea of explosive barrels could be used outside of that mission. Shooting barrels of radioactive waste could be a fun and messy way to take out bases.
