If you really need 2 guns with special ammo, you take 2 gunners. If you need one, take one gunner. If your ship can run just fine without special ammo, take no gunners. I don't think it would break the game. I think it is something to think about.
That will ruin the initial idea of teamwork as highest priority. Class does not means that your role is strict , we have pilots, rebuilding hull and engines in critical situation, gunners as main repair force for guns and helping on rebulds as well (no engines-no arcs - no shooting). And engineers, able to do everything.
Currently, game has
10 pilot tools,
8 gunner ammo types and only
6 engineer tools. 2 of the pilot tools designed specially for engineers and gunners. Adding 2 ammo types, which will be useful for engineers, and engineering tools useful for gunners and pilots, would help to correct the class balance.
However, this topic is dedicated to ammo types , not to rebalancing engineer's tools.
My suggestion:
Phosphoric shot. +70% projectile speed
-20% rotation speed
clip size reduced to 1.Highlights the component being shot, so the enemy ship is not shaking the spot. Also, the halo of lighted components helps pilot to watch the movement of the enemy ship in blind zones.
Puts several stacks of fire to the gun being shot from and to damaged coponent as well. The lightning effect stays for 8-10 seconds.
How to exploit:
- by gunners, who can instantly extinguish their gun by heatsink clip. This mostly related to heavy flak gunners, who don't have much use before armor breaks. (weapons, generally used by gunners, like Typhon, Lumberjack, Manticore, Hades require only 2 ammo type for tactic advance, so probably the third slot can be taken by Phosporic clip, which gives huge advance).
- by pilots having light guns near helm, like Galleon or Spire. Unlike taking flare gun, this does not makes the gun slot itself completely useless in terms of damage. Helps the crew to do spots, helps himself to prevent enemy ship going blind zone in brawl. Makes harder to shake spot by cloud, does not influences to shaking spot under cover.
- completely useless for engineers because, well, -1 person gunning on the ship. Very few ship build have no-shooting engineers. Also can't be used for Pyramidion's maindeck due to lowered rotation speed.