Using current actual attrition rates, current actual new hire class numbers, and reasonable hiring targets stated by management, a new hire today will be about 50% seniority in a year. The 18-25 month upgrade is more like a worst case scenario.
If that's not enough there is no regional with a better bonus package--except maybe Envoy is equal assuming you don't have a 121 type. If you do have the type AW wins by a long shot.
Crews are by far the least disgruntled I've ever interacted with. Most people are proud to work here and actively try to welcome you/help you. It's a far cry from the typical impersonal mega-regional pilot mills I'm familiar with.
When you hear a few people talking trash about the company you have to keep in mind literallly every current base (maybe with the exception of ORF) is closing in the next 6 months with the transition from AA to UAL flying. It's not surprising some people are not pleased with the situation. This should make zero difference from a new hire's perspective though as long as you'll be happy with an IAD or ORD base. It's a 5 year CPA which means job security.
The health insurance is insanely inexpensive and good. You can literally have a surgery or a baby and pay a $15 copay. There's no deductible. Hospital visits have $0 copay. It's around 150/month for a single person. Tons of other industry leading benefits like 401k match. The trip/duty rig is massively beneficial and doesn't get nearly the attention it deserves with less efficient FAR 117 trips.
This place is as good as it gets. Don't listen to the naysayers.