Alright got it to work. I pasted over for i in traitpool: to baby.add_trait(i) which I hadn't done since the first time I'd done it. Works great now. The next generation of children were not born degenerate. (What are they teaching them in that other dimension?)
Thanks again for the help. Going to try adding traits to char gen and some piercings later if you'll bear with me.
Edit#1: Got ones in slave_tab.gd to work, but not had luck with mainmenu.gd
Edit#2 Found out how to add additional starting traits for your starting slave but not yet found out how to add any player traits.