I am light. Believe me my F-450 looked pretty. The FL looks very utilitarian. Looks seem to be very important to you? You seem to be concerned about sales, Since all of the FLs that share my cab are built to individual specs. They are all pretty much the same truck.
Well, Ford has very little interest in trucks. They have a much lower profit margain. Ford seems to be commited to owning lots of automobile companies. That I why they suck at truck options.
Ductwork
Hardly, mostly lots of tools in a fullsize utility body. It has yet to see a hill that it will not do its top speed of 82 at. It will break traction if you are going up a steep hill at lower speeds, you can feel the side to side hop. The body used to be on the PSD with its 4.88 ratio. That was the truck you had to put your foot into before the hill. Nope, it has no problems with hills, just set the cruise and she holds her own.