Why play into the airlines hands? Perfect opportunity for pilot unions around the world to rally for 3-crew flight decks again. Can be argued its a safety requirement and can be argued there are untold training benefits for the 3rd seater. Putting an F/A on the flight deck when required is at best a feel-good stopgap measure, and essentially useless.
The race to the bottom has to be reversed at some point. We can't just remain passive observers to the bloody wreckage that spineless bureaucrats are inflicting upon us.