I find it would especially be important that the custom loadouts come to aircraft which have been implemented with wrong, outdated armament, supposedly for balance reason.
My pet-peve-examples are the Swiss Mirage IIIS C.70 and F-5E: Both represent upgrade modifications in the late stage of their service live - very characteristic for the Mirage with its Canards, RWR, CMS dispensers and grey paint scheme, and less obvious but clearly the case for the Tiger with its “sharknose” radome and extended wingroots (LERX).
In the game the Mirage is equipped with 2x AIM-9E, which were remowved from Swiss service already 10 years before the upgraded KAWEST 85 aircraft we have modelled in the game, and the Mirage IIIS C.70 should receive the AIM-9P-4 (all aspect) for a higher custom BR of 11.0, m1x 11.3, and maybe even the AIM-9P-5 (IRCCM, smokeless motor) for an even Higher BR:

For the Tiger, it’s not as much of a step, it having the AIM-9P-3 in game (which contrary to what we have in gam in all documents I’ve seen so far is also all aspect), where it also should have the 9P-4 and 9P-5:
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Both cases I’ve already submitted and documented when they were introduced in WT, and especially for the Mirage I could provide good references with pilot manual, as well as tons of photos.

