What if we got rid of the airplane galley?
https://edition.cnn.com/travel/article/airplane-galley-lockers/index.html
Automation of inflight service is a good idea. But, whether or not it's effective depends on whether or not total salary of flight attendants is higher than cost of machines prepared for automation.
If initial cost of such machines becomes lower than cost of flight attendants, it's high time to install automatic catering systems.
