Well, T2 rigs require T2 salvage which is not always in abundant supply. As such, the rigs tend to get expensive too.
Faction rigs… May be am in between T1 and T2 thing requiring T1 salvage but with a BPC bought through faction warfare stores. Still, it would have to be between T1 and T2 which isn’t always a lot of room.
Officer and Deadspace well… They would need to be from BPCs dropped by officers and such. Salvage… If it was T2 the rigs would have an insane price and probably be extremely rare. Plus they would only be used on few ships, so it would be the rich getting just a little more leg up which would anger many. Plus… Image you kill an officer finally and it drops… A small shield explosive resist rig. It would be difficult to make and harder to sell. Very disappointing.