There used to be a rumor that clearing the League would send people home, but that's been debunked. Since then, people settle down, work as they can, and randomly people go home. There's no rhyme or reason to that however.

I've had friends just up and vanish back to wherever they came from, which is hard when I've known them for a while. But at the same time, it's nice to know that sometimes people can come and go in a good capacity.