For what it's worth, I don't know of any Delta pilot who feels that way. You were hired by NWA to fly a Compass jet for some period of time and then move to mainline. That is the deal you were offered when you came to work for them, and that is the deal that Delta assumed when it merged with NWA and is now honoring, having sold Compass.

No loophole. Just people living up to their end of a bargain.

Welcome aboard!!