What strange cargo handling?
From the current SRD:
“3.2.3.3.2 No major reconfiguration, such as removing aircrew seats, barrier net, aircrew rest facilities, or other peripherals, should be required to load or unload the KC-X main deck cargo compartment. (NON-MANDATORY)”
I can't imagine why this shouldn't be mandatory except for the fact a KC-30 got no problems and a KC-767 got problems with this feature.
Maybe the short 767-200 fuselage got some problems due to the space between the tip of the left side engine or wing root, the cargo door, the crew compartment and the permanent seating for 15 crew members. So each time a KC-767NG loads or unloads cargo some semi-permanent features have to be removed first.
Distance nose to wing root for -300 is about 60 ft. For a -200 it's about 45 ft. So a -200 is about 15 ft shorter in front of the wing. Distance between forward door and wing is about 25 ft for a -200. Cargo door is about 12 feet width. There is not much space left.