Very interesting thread Tiberius
I agree with your observation(s) & thoughts on the Borg Collective.
The Collective is 1 huge complex brain & consciousness. It is very much like neurons & a, the brain as a whole.
Similar, if not the exact same thing, with hymenopteran insects (ants, bees, wasps, hornets) & isopteran insects (termites). The entire
anthill, beehive, wasp or hornet nest, or termite colony, nest or mound is one gestalt consciousness
, like the Borg, the xenomorphs of the ALIEN(S)
films & the Sandkings of the 90's Outer Limits pilot.
The individual hymenopterans & isopterans are like neurons, as well as arms/legs/etc, & the Queen Hymenopterans/Isopterans are the brain, & also heart as well, of these insect's hive-mind consciousness. Analogous, parallel, if not identical, to the Borg drones relative to the Borg Queen, the xenomorph soldiers/workers relative to the Xenomorph Queen, or the sandking workers/soldiers relative to the Sandking Queen.
Hope my take on all this was useful.