Simple request, couldn't really see it mentioned when I searched (tried "sort", "fitting", "damage"), but... Yeah, haven't played the game in months (a year+, really, if I'm thinking about it right), and the new (to me) sorting of weapon types by Ballistic/Energy/Missile is a big timesaver with all the universal/composite/hybrid/synergy mounts available, and especially once you start adding any significant number of mods.
That said, would be super cool if I could ONLY look at, say, Kinetic weapons (because I just fitted some huge HE battery, for example, but need something to whittle down shields). As a bonus, for slots that are fixed-type, as you know you can do "step down" mounting, so if I say want to exclusively mount Pilums, I can sort by "medium-size weapons" and thus fit them onto the Large Missile slots.
This would be really nice, especially for mods that add weapons, because I find myself tending to pick whatever the first/most familiar weapon is that has the damage type I need, which in my current playthrough for example means all of my Large Ballistic HE weapons are Hephaestuses and Mostros (from Diable) just because they show up near the top of the list since it's sorted by OP cost. Seeing the full spread of weapons with the damage type I want/need would really help me maybe discover some of the weapons I tend to skip over because I haven't really had visibility on them before.