“so if you had to pick a legacy that will offer the most relative seniority progression over the next few years due to SL expansion, UAL is what I'd bet on.“

Alex - for $500 I’ll take “which legacy offers the best relative seniority gain?”

17/22/27/32 yr seniotity number forecast, early 2027 data, using APC’s data -

AA - 4500/2000/950/400
UA - 5100/2550/1250/650
DL - 6500/4350/3000/1700