Diverting for a moment (sorry), the 747 freighter proponents have, at length, told us the advantage of it is the nose door for outsize/long loads. The A380 was disparaged for only have side hatches.
Just read in AWST about all the orders rolling for 744 conversions to freighters whcih are being done in China. Exactly the same spec as the 747F except - no nose door.
Obviously not that important then.