Uncharted worlds

[pillow]

I would enjoy being in one of those systems where there are these guys that are - really - strong, and hostile to everybody.
A sense of fear you'll have when you go through that special system. Maybe even asteroids, like the little moving ones, but actually bigger that bump in your ship? A pain to go through, learned from Crossfire.

Or just simply a graveyard system, like number 4 mentioned by Iron above. But instead of active ships/platforms/bases...the system to be just dead. Simply dead.
Maybe some left ship models that were never used for the mod, plant them there as wrecks that - could - give codename weapons, and maybe radiation to the system. A backround soundtrack like the one in Iota...well, similar, and just nobody there. Just you, alone, with this sense of fear that you'll be shot down by something invisible to your scanners, at any point.