Structural member often implies a module central to all other components, but it doesn't have to be that way, a structural battery could still be bolted on to a

Structural member often implies a module central to all other components, but it doesn't have to be that way, a structural battery could still be bolted on to a under-spec structural frame to bring it within strength specs. I think what you are really against is the concept of the all-in-one car-frame-battery.