Net launcher would be an interesting way to make a deployable shield. Temp stops weapon fire, cept for piercing rounds.
The trick with the impact damage Barracuda Sky Torpedo is..the mine impacts damage everything, plus light fires. You can knock out armor fast if a ship takes multiple impacts. So you could do a Torpedo with impact as primary and maybe piercing as secondary. That...would make a heavy piercing weapon that wouldn't be OP cause it would have slow traveling shots and shots that wouldn't be in rapid fire. A goldfish with a torpedo launcher would be awesome because you wouldn't have lateral movement to account for, just deployment range so you could charge in firing torpedoes and with impact damage, imagine the satisfaction in seeing your foe being bashed around, armor dropping then gun it with moonshine and ram it straight up his rear!!
Course what would be really hilarious, is if you could catch up to torpedoes with the fish. Run into your own ammo..lol. But then again, in Starlancer when you'd do a close range kill on a torp bomber and the ship would just erupt violently, if you got enough speed and timed it right, you could blast through it and ride the shockwave, boosting your own speed for a moment. Imagine moonshine goldfish speed with a torpedo burst. Sure you'd take damage but man it would be super insta kill.