They can go as they will. This is to provide a place for education, training, and an offering of stability as well as protection. There may be some sort of compulsory training time for mages included in the treaty, whether by the community or by another fully trained mage that wants to take in an apprentice, just for the sake of safety, but the basics a mage needs to know could be covered within two years.

I realize giving the option to go one's own way will weaken the standing of the group. But freedom and options are of paramount importance. Without them, things absolutely will go downhill.

And I... would not disagree regarding a death sentence for such an act. But the line will have to be set at which doing that earns it because the law attempts to make black and white things that can sometimes be grey. Mind control for personal gain should be punished severely. But what if a blood mage mind controls a slaver to set slaves free?