Flying on a commercial jet, I don't want to have to be stuck with ANY sort of luggage - soft or hard shell carrier - once I hit the ground (or lug it with me on my trip) - I am rolling over in my mind using disposable cardboard wrapped with shrink-wrap & nylon twine. At destination I can toss the cardboard & roll up the shrink-wrap & twine & pack it for my return flight - it sure beats the size of a soft or hard shell container. If I need some lateral supports to keep my folder from getting crushed I can add a few pieces of pvc I beams if need be.
Is this idea realistic? (if not, it won't be the first - or last- time