Aside from larger seats and cheaper flights, I'd really welcome a couchette approach on long haul - for those who don't remember, when trains had compartments with 6 seats, these could convert to 6 bunks... Aaah, the luxury of turning over in your sleep!
Too much emphasis in providing hot multi-course meals when a fresh(ish) sandwich would do. Eating on planes is not a pleasure, its just an occupation to mark the passage of time.
Quite often on night flights, we have to be kept awake whilst drinks, dinner, coffee and toilet runs are completed, even with the fastest crews this takes at least a couple of hours. When tickets are issued, a timetable could be issued for the flight stating what food "events" were taking place - people would then know to eat first, for example, and the lights out times would be better suited to sleep patterns.
However you cut it, its a bl**dy long time in a seat!
Cheers - SLF
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29A please!