And, I know that we will probably be getting more OP to spend on our ships in the future, but that doesn't change the fact that this hull mod still isn't worth the OP cost IMO.
can you explain why it isn't?
Because a ship needs to have an enormous number of Small weapon slots to make the per-slot OP investment worth it. And even then, the PD tactical lasers or similar weapons are still not nearly as good at tracking and destroying missiles as dedicated small PD like the Burst PD laser, Vulcan, or Dual MG.
For example:
I don't remember exactly, but IIRC the PDAI costs 30 OP on a Capital-class ship.
Tactical lasers cost 5 OP each, Burst PD cost 8 OP each.
If you only have 5 small energy slots, then each of those PD-enabled tactical lasers costs you the equivalent of 11 OP (5 OP for the tactical laser, + (30/5) OP for the hull mod) and they're still not that great at tracking and destroying missiles due to the Medium turn rate and slower method of damage delivery.
It would be much cheaper and similarly effective to mount two or three Burst PDs and two tactical lasers. That way, the burst PDs can quickly, easily, and effectively zap missiles, and the tactical lasers can stay focused on a target doing damage, AND you save a large amount of OP.
Even in a situation like the Odyssey, where you have more than 10 small energy slots that would benefit from PDAI, knocking the total OP cost down to ~8 per tactical laser, they're still suboptimal at tracking and destroying missiles due to the slower "damage over time" nature of the tactical laser and its less optimal tracking speed. It's better just to mount a few burst PDs on the mounts with the most coverage and save the rest of the slots for more dangerous weapons.
On a frigate or destroyer, the per-mount cost is lower, but you have fewer mounts to work with, and still have to buy Advanced Turret Gyros to have any hope of having the weapon actually hit the missile. Even with the Wolf and Medusa and Lasher and their (relative) plethora of Small mounts for their size, it's still typically more effective to use one or two dedicated PD weapons and use the OP and slots you've saved for more efficient damage-dealers.