also yes we know exactly the sizes of all the ships as well as the space stations etc and some scale models have been made with internals in them - because initially at least all these ships were meant to have actual visible and useable internal areas.
Ooookaaay, but if I put a module that's class 1 sized in a class 8 slot for example, what happens to all that extra space it doesn't take up?
Also please link me where FDEV released official canon specifics on the volume of the optional internal slots. This is news to me.
i think you need to google hard sci fi!.
I know what hard sci-fi is, no need to condescend. You missed my point and that's okay. You want Elite to be more "realistic", I already said why that's a tall order with it being placed so far into the future.