I am asking since I have some "simulationist" suggestions.

IIRC, the Enterprise D (Galaxy Class) has:
- 12 Phaser Banks, plus one additional in the Combat Section if the saucer is removed.
- 2 Photon Torpedos, plus one additional in the aft saucer section if it is removed.
The "shtick" of the TNG era Photon Torpedo launchers apparently seemed to be the ability to launch torpedo salvos. That could be a special ability. Maybe once per combat or turn can fire up to 10 torpedoes for the cost of one, but each torpedo has to attack its own target.
Of course, the whole "saucer section removal" thing - as little used as it was in the series - could be its own special ability, too.