Is Xyphos strong because of Ion Beams or Burst PD? I am guessing it is mainly because of Ion Beams. While paying 18 OP for both Ion Beams and Burst PD is okay, paying 18 OP when I only want the PD weapon is lame.
Mining Pods' lasers are too weak for PD. Pods are mostly useful for using their bodies to block bullets and missiles, which is not very reliable.
Using Converted Hangar for fighters, especially Xyphos, is very expensive. It is mostly useful for ships that cannot get a lot of guns/PD on the ship itself (either because lack of mounts or working around AI behavior). And if the player does not have carrier skills, the debuffs from Converted Hangar cause other fighters drop like flies and rate drops to 30% fast.
More support fighters would be great for warships with proper fighter bays, especially Odyssey and Legion, who are slightly OP starved.
As for the hullmod suggestion, probably the only fighter it would work decently is Broadswords because they are not too expensive, durable, and replacement is not too slow. They are one of the few fighters that work decently on no Leadership builds. Maybe Warthogs too, since their weaknesses of slow speed and low range are not a problem when bound to a ship.