You're probably "over-qualified". They think you'll jump ship in the next few years as the hiring really starts to pick up at the legacies. I know a regional FO who was just hired without a degree. He had 3500TT, 1500 turbine, and about 400 turbine PIC. Just a guess but they may be looking for pilots who will stick around a while. Not that you wouldn't, but on paper you look prime for a legacy job.