I think we are missing Bob's big picture here. Pre-covid, HE was the one talking about SEA320, BOS320, SLC330, etc. What changed? Covid, obviously. But 2021-present, the issue is training. We have been literally hiring and upgrading to whatever the maximum training capacity permitted. Over the years, Bob has explained why the line changed to 'no new base today, maybe tomorrow'... training capacity. Opening a new base is like adding a new fleet type. It creates more sim sessions + OE so pilots can play musical chairs, but doesn't increase block hours or replace retirements. Post 2020, DL has been racing to restore capacity. Opening a new base/category actually muted their ability to get back to scale/grow. It's more of a long term savings/reliability quotient.
So I do think we will open a BOS base. When? Well, perhaps when we don't have so much training demand paired with network having a more firm idea about fleeting. BOS has equal mainline departures as SEA.. it'll warrant a base inevitably. They just don't see the cost benefit in the present. Perhaps if we see everything stagnate with a quiet school house, it'll be warranted.