Great thread! The invenventory issue could be easily solved by getting a coded card, sticker, whatever printed out with boarding pass that must be placed with item in overhead. As FA's pass thru to close bins, anything without said ID gets gate checked to baggage hold or left behind for next flight if time is too short. I get sooo tired of being pummeled by carry-ons that have no business outside the cargo hold! Not to mention having your neatly placed silk coat and brief case destroyed by a psycho-posessed demon from hell pax as they stuff,crush and wad 200 pounds of oversize carryon into same bin. Oh, then there's the sport of trying to actually access said case in flight, if you can even find it anymore!
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Ken