Drive up Cost. Really. Engineering ribs into the titanium casting is not going to break the bank. Adding 1mm to the thickness would not prevent me from fitting it in my backpack. Probably would still bend if flexed. Maybe they should be made of bendable material. Flexipad.I think this is probably just something they are considering... problem is this will drive up cost, and although it doesn’t bend as much, it will be more prone to snapping.