Airlines in a Crisis

We are now a year into the pandemic and its time to better organise the loading of freight into the cabins of passenger aircraft. There needs to be developed a container that can get in through the passenger door, or the emergency exit door opposite. Preferably in a bit less than 1/2 cabin width size, leaving space for passage down the middle. After all every airport have the equipment to load such containers, daily in use to load the wheeled carts that contains food, drink and duty free to be consumed and sold onboard. In practice they could be seen as small containers. One could also do with a track system that would be fastened to the mounting points normally used for seats, to easily move around and lock in place the cargo.  Maximum weight would be 5 passengers at 70kg each plus the weight of the seat lets say 50 kg wich give a maximum weight for each container of 400 kg. for a 3+4+3 seat width plane and 2 container wide. sample a 787 or A330. That should leave at least 350 kg ...