Not from where I'm sitting it doesn't. As a Jr SWA FO, I'd get a small boost in seniority on DOH, but have a bunch of younger guys injected into the system above me who will change the demographics of the entire list above me.

If I ever make Captain, I'll never get off reserve as all those younger dudes will never retire.

You must be looking at the top guys only. Who cares what happens to the most senior capt's (on either side). Somehow they always seem to do well no matter what.