Oldtora,
The carriers will never do that as it would force every passenger to check in bags for the hold when the trend now is on-line check-in and persuade SLF to travel light (to save lbs/kgs and therefor fuel) and to avoid (as much as is possible) reliance on old style check-in desks, baggage handlers and queues. This trend is to minimise ground handling overheads not to maximise cabin safety!
There's no $$$ in safety.......especially when airlines are in a market where every cent counts!
MB