i don t think its possible to do anything but absolute damage anyway to ships.
a certain vulnerability to gasclouds would be fine for large ships - and actually does happen. - if disco capital ships ( civilian and military ) still had no shields - flying through a dangerous minefield or gaspockets would damage the subsystems severely.
but that takes us to the nasty problem of shaking capital ships without shields.
I'm all for Bumping up the Light Fighter, Heavy fighter and possibly Very Heavy Fighters resistance to Radiation and mine damage, and making it a bit more hazardous for transports and maybe gunboats, but Cap ships should remain where they are as they are expected to have shielding and Radiation resistance plating.
Dream Theater - "Sabre120 and Jongleur officially win. That is all."