Meantime, back to the topic....
My airline's CRM people had just got a combined tech crew/flight attendant CRM training programme established when the door rules changed.
The programme was doing well in helping to break down the flt deck/cabin barriers to communication, so the CRM folks were really tearing their hair out at the new (to us) requirements.
It was then a matter of not bitching about it but working to limit the potential damage to good information flow. One potential benefit was that both tech crew and cabin crew now have to be much more accurate in communicating: face-to-face communication is no longer so easy so it's harder to get feedback ("was what was received the same as what was meant").