^^ bingo.
And if you want to stay domestic with the retirements and guys going to w/b flying your domestic seniority at DL/UA/AA will be that much greater. I forget the timeframe (10 years?) using the current bid statuses and who's flying domestic you'd be in the top 2% of FO's in EVERY LAA base if you stay on domestic n/b's.
Net? The Big 3 will be better advancement than SW for someone who only wants to fly domestic.