Gaurd Systems need to be RAMPED up, maybe a far off pirate base or enemy-nuetral faction far out in a nebula of the system, who thought they discovered it first...
They need MORE variety, for example Peurto Rico (Junker Gaurd) is a good start.
It has a very odd sun-radiation-death field.
Also, Omicron 82 is also very VERY nice.
Omicron 82 has periodic Nomad attacks, it would be nice to ramp that up too.
factions with low-defense'd gaurd systems (like xenos who only have 1 station) would suffer periodic NPC Gaurd Attacks (in this case it could be LN or LPI)
Of course, this would happen in under-defended Gaurd Systems.