PHL is a good bet as stated above. I started in July and am around #20/60 in base. PIT FOs are similar after the recent upgrade exodus. DCA is a little more senior, but as stated above with lose a significant portion of flying when the J4Js leave. It is assumed they will shrink the FOs by attrition to upgrade. CMH is supposed to be one of the larger bases. Expect to see classes mostly go to CMH with PHL a close second(although we are approaching the 80 crew goal that has been discussed). Good luck!