carnut, I view it more as that we only get the RWD version, not that the Transit concept has changed all that much from previous 2013 model. The European version was available in both FWD and RWD previously (don't recall about AWD), so that hasn't changed either. If you go to UK site they list FWD, RWD, and AWD Transit models.
If we don't get the FWD version here it's only because Ford doesn't think they can make as much money (either because of profit margins or they don't think we'll buy many of them). If the RAM ProMaster sells well I'm sure Ford will compete with a FWD version.
By the way, a good friend sent me a phone video inside a middle roof cargo Transit and even though he's only 5-7 or 5-8 tall he instinctively ducked his head to move around. He was checking getting between seats for me, and found it more difficult than in my Econoline. He even hit his head on top console the first time coming from cargo to seat. I still need to see one in person but data so far is less than I expected -- hence disappointing.