When I make a YA in CAS, I give them the skills they should have learned as children (peg box, etc), so that when they play chess, they immediately gain up to level 4, as if they had used the peg box as a child. i think it's only fair, since you can't give YA skills in CAS.
I also give my Asians made in CAS, the hidden trait for China, so they can eat with chopsticks, etc.