I agree with the sorting system, and it already has some of the base sorting mechanics done since you can already search for different weapon sizes and types in the codex, you'd just need to find a way of implementing that into the current UI, with a few more settings, for resources. It would also be cool to be able to do the same with ships, and again, the basic for this is already in the codex. I don't know how difficult this would be to implement, but I think it would be a welcome improvement.
I know there is already some basic sorting in the menus, but it just doesn't quite cut it i feel, and it can look quite cluttered and confusing in some situations, and while with ships its less of a issue, it would still be a nice bit of functionality, or maybe instead of having multiple of the same empty identical hulls, they could stack like weapons do? Also a bit of topic here, and its been mentioned before, but it's not always clear what class some ships belong in, and in the shop menu it isn't stated or made clear at all.
Anyway that's just my opinion, sorry if I got a little of topic at points, but I think I explained myself fairly well.