That is, I wouldn’t want to meet quotas by taking problem cases off the streets.
I agree with other posters that the services should be made to be attractive careers on their own. Draw in the people you need or can train. Don’t take anything less.
Some of the best military people I have known enlisted after being found guilty of a crime and given the choice to join the military by a judge. On the other hand, talked to a marine officer recruiter a few years ago who inducted 12 men into Quantico, and of those 12, only the two who had required waivers passed the initial training course.
These days they are disqualifying people for BS reasons—a lot of these young people would be just fine if they were led properly.