First off why would UAL pilots know anything about UAL buying a regional?
2. If Compass got 60 175s they would have to take all of Mesas since United is scoped our on 76 seaters. I highly doubt Skywest and Republic would lose any business.
3. If they put 70 seats in it then they could replace Mesas CRJ 700s but that is only 20. Go jets 20 are already going away for the 70 seat 175s at Xjet. And the 19 Skywest are used for Aspen.
If compass is getting 60 jets Mesa is toast. because there is no room for expansion under United’s scope and RAH isn’t going anywhere and neither is Skywest.