Not sure about this to be honest. Resigning at such a high rank and having the ability to reapply doesn't seem fair on new potential candidates for HA. They should have to work their way back up to it again. Dedication and commitment more than anything. May have taken it a differently/worded my words wrong.
"But so and so was a good ha" and? They chose to leave, now give someone working as hard as them a chance.
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