I played with interest in your mod, dear author, and I can say that it is wonderful - but it obviously needs a balance.
I offer a few ideas on how to do this.
1) I suggest not to reduce the cost in flux, damage and other characteristics of the weapon - BUT tie them to a faction mod that is pre-installed in a non-fractional ship. Without it - impose debuffs on the ship.
2) for factional ships, it is necessary to introduce bonuses for flux, its dispersal and the cost of installing weapons, if factional ones are installed. Without this bonus, ships instantly drown in flux and give out DPS below vanilla cheap low tech. Naturally, they die immediately.
3) TOO MANY WEAPON SLOTS on destroyers and above. Large and medium slots can be left - but all small ones must be cut three - or even more times.
4) It is difficult to see the installed weapons. His sprites need to be dyed a radically different color for easy refitting.
In general, your mod is very interesting. But the terrible power of guns and fighters must be regulated by some conditions.
5) I do not see a problem in the terrible power of guns and fighters. I must say right away. But there must be regulation - and the easiest way is through faction reputation and setting hullmods to allow operations on ships and their equipment. as one of the options.
I continue to follow with great interest, you do a great work
Love this mod man keep up the great work!
Like the guy above me I gotta agree, the main gun type armaments should be built in or have a bonus when slotted in to one of the faction ships. Aside from that deplyment cost are way to cheap, along with some of the weapons being a bit to loud. I don't know if the weapons being loud is just me though.