If you have a large team and have affiliates in different countries, and now have "Aces" who are on their way to being Team Leaders, people who you are mentoring, then that is when you can consider reassigning your own PSAs under them.
You probably don't need to worry about putting specific PSAs under a leader of their nationality until a way down the line, when you have sponsored a Leader in that country and have a surplus of PSAs from there.