If the Arbiters take the point into account, they will not look at hiring minimums. They will look at the actual or average qualifications that pilots were hired with.
You may well be correct here. Either way, the result will be the same.
Throughout the history of ValuJet/AirTran, those hired worked more days for less money than their counterparts at nearly every legacy, LCC and UPS/FedEx.
Anyone who disagrees with this logic should then ask, "why AirTran"?
Given the choice, why would any competitive applicant intentionally choose the lowest option in terms of pay, benefits, QOL, etc. Many AT pilots decided these things were important to them, so you get the high % attrition from AT to SWA, CAL, DAL, UPS, FedEx, UAE, Cathay, etc (for years, nearly half the hiring at AT was to replace pilots lost to attrition).
There are many current AT captains who got hired with less than competitive mins for nearly every legacy and UPS/FedEx. The exception was the hiring in the mid to late 2000s when there weren't as many carriers hiring relative to the number of qualified applicants. They are young as a group because of this. This youth absolutely can have a negative impact on SWA pilots and will be a legitimate factor in any SLI decision ( if there is an SLI at all).