How bout implementing some into Discovery?:)Could be excellent and funny weapon! Suffering a bit from ammo maximum level, but maybe some alternative can be found regarding that.
I do not want them as antifighter weapon unless you can aim.
More of a current unguided missiles on Apache or Hind.
Basically a lvl 9 or 10 launcher named lets say 60mm rockets I
Lvl 9 gun so you can mount it on fighters, 70 ammo per tube, about 6-10 refire and high energy drain, reasonable speed, no turning, blast radius.
And to add more to the effect - thats why I labeled the gun rockets I, you can make launchers I, II, III, IV and mount 4 on your ship, giving you a 280 rockets in your hold. Now that is a fighter capable to hunting down big ships or transports with ease.
If missiles are unguided they should be called "rockets". As you said its effectiveness is limited by the damn annoying ammo limit though. Besides, aren't destructive missles like Cannonball kind of like unguided? In fighter battles their tracking and turning speed is next to nothing, speaking from experience.