Maybe I've got this wrong but isn't it better for us (pilots not the company) to fly a smaller airplane as long as it still pays the same? What I'm getting at is we can still keep the pay rate but continue flying into airports that may not make sense for a bigger airplane. Similar reasoning made me glad we didn't take the A380. It takes more 777's to do the same job as 380's (although we would have had a higher pay rate for the 380).
I think that the company is positioning for flat or declining express volumes and doesn't think it needs the capacity of the bigger airframes anymore.