I agree, for making the suitcase easier to run with it would probably be much smarter to implement a different type of handle or wheel rather than changing the entire shape of the suitcase. Here’s another idea: removable wheels snapped onto the sidewalls. Before going through the gate, you remove the wheels, “yes this is a suitcase without wheels”, put them in your pocket, and put them back on when you’re through. They should probably be as thin and large in diameter as possible. I agree that a lot of value can be added to suitcases by making them more manoevrable - traveling sometimes feels like grocery shopping on a time limit with current-day suitcases. Also I’ll take a door over a zipper any day given that you can lock it, and the option of creating compartments is great. I do not like your visual design and the sharp edges will be the places where the suitcase will wear very quickly.