At the start of my second game I went south to the natural wonders where I encountered the green neolithic. I fought them of killing them all in the process then settled as an ancient era player. Fun fact when all neolithic units are wiped they spawn with a stack of 4 in the same place every time, and they are worth era score from fighting. The few times they escaped from me due to poor management on my part they headed north and settled right next to me, I would of let them live but the were taking territory I wanted to make my empire contiguous. now I just farm/block them off because I know they will be a nuisance.
Is this working as intended or should respawn be weighted and randomised so I can't keep doing this. I like to hear thoughts on whether killing neolithics should give era stars.