Originally Posted by
Justdoinmyjob
Who knows, maybe there will be a mainline carrier looking to buy some -900s which they can operate on the mainline with 90+ seats in them.

Not sure where you'll put the + seats
Why has NW not replaced -9's with -900's already ? Why has DL had a 100 seat pay scale but no 100 seat planes ?
It's all money, and unfortunately, "cheap" contract labor and planes, and mainline unions that agreed, have won out so far. With jobs at a premium, mainline pilot groups may alter their ego about flying little airplanes. But they'll have to operate competitive aircraft (i.e., not -9's with $4 gas).
US Airways is flying E19x's already.