Per the IAM-fleet contract, express stations can have two mainline jets daily, year-round. Express agents can work these flights.
Additionally, the company may put unlimited 'seasonal' flights into express stations, with express agents working those mainline jets. The definition of 'seasonal' is four months at a time during a year. I took that to mean the company could have two 'seasonal' periods annually in any express station, but my rep says no, just and only four months annually. We'll see.
Lastly, the company and the IAM will be meeting soon to iron out the seniority language for mainline employees displaced to mainline express and MDA.
During Concessions, parts I and II, I had some pretty decent info that up to 17 stations would be 'expressed.' STL and MEM got the chop, and CLE is on the block in June. Probably more to come.
My guess is, when it's all said and done, the hubs (perhaps less PIT), the focus cities (and a bunch of their flying will become RJ) and the long range cities (LAX, SFO, DEN, etc)will remain mainline. CWA and IAM agents in most other locations will have a new 'expression' on their face.
"may you live in interesting times"
Chinese curse