I'll give one. After securing 88 717s, maybe a few more, 70 more 76-seaters and bringing the fleet total for the 90s, there will be more than enough lift and "right sizing" of the fleet to cause the ROI on upgrading the 88 cockpits to be deemed to expensive.

They've been evaluating the ROI on that for almost 2 years and when you press for an answer it is "we're trying to evaluate if this is worthwhile." Well, to me the evaluation is based on this TA.

They'd rather have 175 additional jets that give them a 160 seat, 117 seat and 82 seat mix than to have 117 jets that seat 149 passengers and possibly require 120ish to B/E. So that would mean in 2020 the 88s are parked.

And unfortunately in that scenario, we'll replace 117 mainline jets with 105 mainline jets.

That's my guess. Feel free to give yours pro or con.