The following Structs likely have a place later on in the game to facilitate trade and to help provide additional defensive balancing if needed.

Planetary Structs

Decoy Drone

Operating Ambit: Air

Planetary Defenses: Low-Orbit Ballistic Interceptor Network

Ore Reserve Defenses: Coordinated Reserve Response Tracker

Aerial Mines

Operating Ambit: Air

Primary Weapon: Self Destruct

Passive Weaponry: Last Resort

Naval Mines

Operating Ambit: Water