The hole to Endimburg from Dundee is well defended, but the connection between Dundee and Lewis is not, there is onle Sandur base on the Lewis side but it's a bit far. I trying to motivate people to make a raid or something but no one listens to me -.-"
The GRN have a suply depot in Lewis*, it was more important before the fall of Leeds but it still is a big target. The station description say that it's for fuel and spare parts for all the front, so if it destroyed the GRN will feel it.
To avoid powergaming, someone only have to scout the system and see the cargo hold of the NPC, a few of them carry deuterium. A job for the Bretonian Inteligence service I belive.
This user talks little to none english. If you find something wrong tell him.