If their regionals paid more folks would stay longer vice leaving to go to other majors. AA isn't a good enough company pay and work rules wise for folks to pass up other companies in order to flow through until a certain point away from the flow so folks will continually leave their WOs when they receive an offer that suits their needs better.

Envoys contractual flow throughs will slow down in terms of % over the long term as wickets are met, and PDTs will increase as manning increases. PSAs may stay the Same for a while or uptick slightly.

Expect to see many flow throughs in AA classes for a while. However Pure civilians do get hired. I have a buddy who is a pure civilian who made it recently. Less than 6 years at a regional, Strong career progression (FO-CA-LCA) and community involvement so it's possible as long as you can get your resume to stand out from the crowd in a positive way.