This is simply an IRL gameplay improvement idea, as in real life you can stack multiple smaller things in a larger space. Think of boxes in a box truck or moving van.
Now I am not saying you that should be able to fit two sizes 1 module in a size 2 bay. Not all things are the same size or...
Adds a lot of multi-crew options to the game.
Add small cargo shuttle hanger, similar to fighter bays, to allow large ships access to outpost missions. Say they transfer 100 tons or maybe 50 tons at a time.
No FSD drive, no supercruise. Just space forklifts.
Ships and fighters need to...