+1
Maybe the reason we aren't seeing any UA drops now is that they're actually still there, but are now being carried around inside the Sap-8's ?
So in theory NPC's have figured out how to transport them (hence FD's introduction of the Sap-8 in 1.3) ?
That's a good possibility. The UAs have been shown to be hazardous and unstable materials, so there may not be much else to them per se. The Sap-8 core containments are probably a way to keep them stable and safe, meaning that the existing UAs might be of little practical use from now on.
Given that they are the most valuable commodity right now, it's possible these are the very things we've been calling Unknown Artefacts.
Also, "Sap-8." Does it stand for "Sapient 8"? A sapient entity associated with the number 8?
There are two possible associations: a row of 8 bits, or a byte, suggestive of human-originated AI; or something that works in base 8 for historical reasons...