The response to any asking of scope concessions needs to be this:

If outsourcing more flying truly lowers costs this drastically, why stop at X amount of seats? Why not 100 seats? Why not 200 seats? Why not just outsource all domestic lift to the lowest-bidding regional, all international long-haul lift to the lowest-bidding Star Alliance/OneWorld/SkyTeam carrier, all of who’s contracts become exportable every 5 years. Explain to me why not.