I also had a few ideas about the general appearance of the Nurst Caste, like the thought that when they crawl around, it's on their backs, to give the males better access and avoid damaging the babies when they're pregnant and/or nursing.  Of course, this has the downside of making it harder for them to stand up, but then they so rarely do anyway...<br/><br/>I think I like the idea of having it be after the colonists have already arrived. ^^ Being able to constantly accept new players works for me.