I wouldn't worry about selection, it is mostly meaningless. Though I suppose for the beginning of the PPs it may be useful just to see how many lifers take up the first slots.

From our MEC Chairman:
"As of April 4th, Envoy has flowed 775 pilots under the 824 Award and the subsequent four-party agreement. The second class in April is expected to have 8 flows. May is forecast to have 2 AA classes with a total of 30 flow through pilots, which would bring us to 813. June would then be the last month of 824 pilots, reaching the end of an era so to say, with the last 11 expected to flow in the first class in June.
Moving forward, we look towards the beginning of the Protected Pilots. The term “Protected Pilots” is a broad classification that covers every single pilot still on property hired at American Eagle prior to October 11, 2011...Because we don’t have exact knowledge of AA’s class sizes for June, I can’t predict how many, if any, Protected Pilots will flow in June or whether July will see the first tranche."