Engineer Materials\Components:
Given that the list of materials huge, I would like to see them more concentrated per source, for example, USS - Degraded Emissions, would drop up to 5 specific materials at random but only from that pool of 5. USS-Encoded Emissions would drop a different group of 5 materials from it's pool, and always have a Private Data Cache available to scan which in turn would have its own specific pool of 5 data scans.
This would help alleviate the sheer frustration for players in trying to find the materials/components as they would know that a specific source, signal, base, or loot from ships will always drop what they need. Even though this is still random, it is only from a pool of 5 materials per source which greatly reduces the enormous RNG of finding materials.