In reply to rbond55:
I'm on my second lwb transit connect. Its my only vehicle though I don't commute in it. Mixed reliability, the first one had quite a few problems (ct joints, exhaust, rust, and eventually the head gasket) but then it was both pretty old (12 years) and had done well over 150k before I got it, the newer one (5yrs, 100k when bought) so far hasn't had an problems in the 2 years I've had it.
I get around 44mpg on average. All of them are sold limited to 60, 70 or 100 but I believe you can get it removed at a ford garage.
It's hi-top which makes it a bit more comfortable space wise in the back (and allows space for a shelf above the front seats) but at around 2m I so far haven't had any carpark height problems. All the lwb ones used to be hi-top but I think after the body work change (2014?) that's no longer the case. The back is over 6ft for max length though since I'm shorter than that I haven't paid attention to the exact size. The interior is generally boxy which is good for converting and the recesses in walls and roof are 25mm which makes them a nice fit for celotex panels. At some point they changed to smart alternators which is a pain for adding a leisure battery as you have to get some fancy box of tricks to fool it into charging another battery.
Another option might be Caddy maxis which are the same shape and length (though don't do hi-top) and have a reputation for good reliability - I don't know how well founded it is though!
Only having 2 seats does occasionally prove annoying and is one reason I think for my next van I might move up to custom/vivaro size (though hopefully not for a few years), that plus once you get used to the luxury of a van you always want more space