Flow is a huge carrot, 5-6 year regional CA's flowing is fantastic. Many will not be very competitive when they flow. You think:
4,500tt, 2000tpic
1 type rating
4 year degree
no LCA
no failures
no networking
no advertised volunteer work
no masters
no consultant app review
Is a problem child, or not a competitive teir 1 candidate?

And those flight times are when they flow not 6-12 months prior when Delta and United would be screening them. Many may not even have apps at UPS, Fedex, or Southwest.