my theory, and I could be wrong, but those giant bases could be the ones that carry the babies
You might have something there CMDR nickweb. Last night I decided to return to the scene of the Crime to see if I can gather more information. I decided to take my AspX instead of my DiamondbackX.
2 Jumps away from Asterope I encountered a Thargoid, this one was a little more "uncooperative".
I managed to keep pretty close to the vessel as it flew away after scanning (my procedure now is to let them scan away, myself and things around it) and noticed that the small RQs (like the armed Predator Drones), return to this area.
It's not an anus, it's the Vessels Hardpoint.
This is where those drones that circle the Thargoid return before entering hyperspace/witchspace. So in theory, your idea is correct.
1 Jump from Asterope, I ran into the most hostile Thargoid to date. Just me jumping into the USS Area prompted a deadly response. It chased for me 3min targeting Shields and Engines and ultimately destroyed me. But I am not going to let that phase me, I am designing a "Thargoid Investigator Class" Ship (not sure, but it has to be fast if I need to run, might use a Viper MKIV) and going back out until I am satisfied there are more than just one type of Thargoid out there. I know there is.
Out to investigate again, I plan to keep collecting data and science.
Gary