I tested this mod together with a lot of other faction mods. Usually I lose ships if the enemy use jizo fighters, nesaku with two fujin rail rifle and the kojin. I begin to use some of these ships too and they feel a little bit overpowered. I nerf them and think this is more balanced:
jizo fighters = reduce armor to 100 from 150 (I still fear the ebisu M with jizos)
fujin rail rifle (medium) = this weapon can match up with large weapons. I reduce the damage per shot to 700 (from 760) and the turn rate to slow (from fast).
kojin = 200 speed, double range built-in hullmod and large weapon slot is too much for only 8 recovery/maintaince cost. I half the speed to 100 (120 would be okay too) and shield arc to 90. Now it's still a powerful artillery ship like in the description. Slower ships still don't have a chance to come close but if any ship can, the kojin will struggle for example I lost one because of two phase ships. Before the nerf it was often the last survival ship. It just run away with the insane speed and destroy any fast (and fragile) pursuer with the large weapon.
What do you think?