On a second thought, maybe Faction weapons don’t need a change at all.
I’ve never been a fan of straight upgrades.
The way Faction weapons and faction drones work now is that they’re sidegrades to T2 equipment.
T2: lower price, higher skill requirements.
Faction: higher price, lower skill requirements.
As result people can quickly get an upgrade for their ship (at a cost), while they still have something to train for to bypass the bonus of the faction weapons with better T2 skills and equipment.