The large ships should be relevant for cargo hauling, which they are not really today. This is the reason that many suggest changing their optional internal module layout. However I imagine that the challenge is to add more big optional internals to them, because these could be used for other types of modules and thus potentially upsetting the balance.
So why not just add a ship size multiplier to cargo rack capacity, meaning that cargo rack capacity is multiplied with 1,5 when fitted on Large ships. Not only would it solve the issue, but it would also be realistic in terms of the physical size of the Large ships.
Right now In many cases cargo haulers just end up with the Python, because the disadvantages of using large ships are just too big compared to the extra cargo available.
So why not just add a ship size multiplier to cargo rack capacity, meaning that cargo rack capacity is multiplied with 1,5 when fitted on Large ships. Not only would it solve the issue, but it would also be realistic in terms of the physical size of the Large ships.
Right now In many cases cargo haulers just end up with the Python, because the disadvantages of using large ships are just too big compared to the extra cargo available.