The J is an awesome bit of kit especially when we're talking performance and SA. However, it is definitely too narrow and you will know only too well SFFP when you are trying to get to the back due to no ready access down the side of a B16 CDS load. A wider herc that can accommodate pallets with seats alongside down the entire freight bay would be the dream solution...and this is where the A400M will be a winner.
Unfortunalely, I don't think I'll see it in my carreer!!
GM