I''ve heard a scenario similiar to this last fall. Mainline designation for hubs, focus cities (DCA,LGA,BOS, etc.) TPA, MCO and MIA. Probably mainline for long range (DEN, SEA, LAX, etc.) although you can paint an interesting picture here with the UA code-share. All else express as the Rj''s come online.
The IAM fleet contract says any station can be redesignated express, and have two mainline jets on the schedule. Additionally, unlimited jets can be placed on the schedule on a seasonal basis - four months out of twelve. With that scenario, even the SEA''s of the world could be expressed.
Now, is that going to happen? Dunno. Can it? Yes. Given this outfit''s track record, I''d bet on the screwing.
I also agree the RJ scam is a crock. The only profitable airline does not have them. One reason is the CASM''s are higher on the RJ''s. Dispatch reliability is suspect, in my experience. RJ''s frequently cannot accomodate all of the passengers AND all of their baggage. (I wonder if Mesa pays the costs associated with the above, or does mainline absorb them? Perhaps Mesa isn''t as cost-effective as advertised)
Things that make you go hummmm!