Personally I wouldn’t make a new ship, I would make ORE design subsystems that are compatible with the current T3Cs, somehow like this:
- offensive: Combined Harvesting Module, 6 high slots, maybe 3 weapon slots, bonus to ore, ice and gas harvesting, andle’s say 5000 m3 ore hold. The catch is that it can only fit small harvester modules.
- defensive: Cargo Hold Expansion, another 5000 m3 general cargo space, with layered tinfoil as a form of defense.
- engineering: Salvaging Processor, bonus to salvage modules and drones.
- propulsion: Augmented Anchor, let’s you stay aligned at all times, the skill bonus here would reduce the speed penalty.
I think if you mix these with the already existing subsystems, you can make interesting combinations, like a cloaky ninja miner or a PVE combat ship with superior salvaging abilities.