I was actually thinking of suggesting an idea that would play somewhat similar to the Manufactory Load Balance hullmod, something like "Streamlined Manufactory". The rough idea is: if you had an intact wing and a damaged wing, the intact wing would apply a reduction to the replacement time of the damaged wing,
but only if they were the same fighter model. For example, in a carrier with three Broadsword wings, with two intact wings and a damaged wing, the damaged wing would have its replacement time cut by around two thirds. If there were two damaged wings and one intact, the damaged wings would have their replacement time cut by around one third.
The in-game rationale would be that, if you have several forge vats set to produce the same fighter model, why not pool their production to accelerate the assemby of replacements?
Replacement rate may not go above 100 percent, but, can a hullmod apply a modifier to a fighter's replacement time (example, if a fighter's replacement time is 10 seconds, is it possible to cut it to half through a hullmod?)
Edit: another question, is it possible to use a hullmod to "fix" a fighter LPC to the ship? I am thinking of something like "Specialized Forge Vats", a hullmomd that sharply cuts a wing's replacement rate, at the cost of turning the wing into a "built-in" wing as long as the hullmod remains in place.
As of replacement boost, the revamped hullmod Advanced Fighter Command should fulfill your need
Built in wing would require making a hullspec on the run which I haven’t find a way to do it. There was an attempt to remove wings from built in but did not succeed. However you may be asking for Ace carrier core? The interceptor and support wing bonus do have huge replacement speed boost.