Yes, reassignment is very good idea. Following are the fruitful effect which you can get from reassignment:
1) Immediately you get 5 Action VP.
2) Your PSA will be able to earn 120 VP more in a month by weekly action by PSA mail.
3) By assigning PSAs of their own country, you will be able to make better co-ordination among them which will help them for their betterment of their business.