Thank you very much for the link. The one thing that is strange is that the EcoBoost V6 is not available for the cab chassis and cutaway versions. Instead, are they mainly going with the diesel, or is the 3.7 normally aspirated V6? The 3.7 V6 is going to be quite underpowered compared to the V10 it apparently is replacing.
You are right about the axles. Narrow axles are great for Euro-style vans because they help get around narrow, twisty European roads. With a 100 inch wide-body RV, you want as wide an axle as you can get within reason for maximum stability. I think because RVs are such an odd bird compared to other uses, what prevailed was engineering for fleets and their needs (relatively agile in metro areas, fuel-thrifty vehicles.)
Of course, the narrow axle might provide a completely new market for Euro-style RVs like the Trend, except with Ford's weight capacity, allow for slideouts. Upfitters can use frame extensions to make a "C" longer than the factory chassis length, so longer "C"s might be possible on this platform.
Another advantage about the Transit is that the seats can come from the factory in leather, which makes it much easier for an upfitter, as they don't have to order new seats.