I guess since you have the entire business model of aviation figured out and how contract negotiations and business politics work into the real world you should cut your losses and go to TSA.

Points are all valid if not for the company being in a huge labor dispute with their pilots. ZW making less on an AAG contract is all relative, if they've been making money hand over fist since flying for US Airways and suddenly they have to make "less" to them that's how they leverage the group to take less money. Worlds smallest violin playing for them having to, say, only make $900,000 a week on flying instead of $1 million.

No growth isn't explicitly said, there are fleet retirements, for hour limitation and planes turning into aging mx hogs but it doesn't say they won't seek to replace them.

There is as much that can be assumed in favor of a future as well as not having one, but if it worries you then seek another carrier and hope for the best!