Long and short (from my limited understanding), they can't offer a base to a newhire unless they've been offered to those already on property. Over the last few months, new hires in one class would be assigned DTW 200, for instance. But they may have wanted MSP 200. However, the next class comes 2 weeks later and people are given MSP 200, without the people in the previous class being offered it.

Is the simple way to explain it. Short term, a few people on property may have been bumped out of a base they wanted, but shouldn't have been able to hold. They should be able to bid back to it quickly. Long term, this should make the process more transparent.