We’ve just got a brand new T6. We could have got swivelling seats (but didn’t as we wanted height adjustment). We have a row of sliding individual rear seat (unwin style). We have space for bikes fully built including a 20″ 29″ Surly Ogre behind the rear row straight, not diagonally. What we don’t have is fittings for a table, but something could be engineered if we had the swivelling front seats.
It is LWB though. Essentially we bought a T6 van with side windows for the very front and the mid-van and had the rear seats added by a coachworks including lining etc, it was due to needing it to be registered as a commercial here in France, as we could have got the same from VW only the seats would not have slid and it would have been a private use.
Bizarrely it’s cheaper to insure than our Berlingo which we traded up from…
Once you’ve gone Transporter size it’s only a hop to LWB and so much more worth it if you have children/ need the rear seats.