> I'd like a bit of randomness to my playthroughs
I agree, I am thinking how to address this too. For example, I could randomize implant locations, or add the implants to bosses and other notable NPCs.

To drop implants as random loot, you'd need to lower their prices considerably. It's doable in xEdit, add MISC items from the mod to containers and/or leveled lists. Although this may be easier to do in the GECK with drag and drop.