Well, they can certainly use them now. If overheating was the only problem, they could do something with the recharge time. As I recall, confed PTC's were built to charge and fire twice as fast as the original Kilrathi version. I assume so that they can outgun them. With newer technology, particularly with the cooling systems, captured bug tech, and a more comfortable refire rate which takes better consideration of heat recovery as well as energy recharge, I'd think it would help to re-issue the PTC's in light of the new threat. As demonstrated, they don't need the PTC 100% of the time, as fighters are pretty capable of bringing down capships, so they can be reserved for special occassions. It should be feasible.