The brutal, national, standardized exam is what you get when you eliminate all the other barriers to going to university. It means every single student is in competition with one another to get accepted.
Shuffling staff around between schools just sounds like a great way to drive all the best researchers to the private sector while driving all the best teachers out of the profession entirely. Forcing people to move around to different cities for their job means you are selecting heavily for a particular “nomadic” type of person without any attachments to the local community. Sounds absolutely awful to foist that on educational institutions who really ought to be in the business of fostering community.