@larrylamb : I'm obviously a big fan of the Exclusive, but I think they appeal to quite a limited market.
They are brilliant for camping in vs. a pop top T4/5/6, but that extra foot length and the height, makes them less of an everyday vehicle (as much discussed on here with the beach vs the SE). You can see from my 'footer' that I've experimented with alternative scenarios, but come back to this.
If it is going to be kept for high days and holidays, I think lots of buyers opt for something bigger than an Exclusive (ie a proper motorhome).
My storage circumstances dictate this is the biggest thing I can store at home, and I still need another vehicle for my business, so it makes sense for me. I can also fit down country lanes, and still enjoy the whole VW thing. Having such organised storage (as I outlined above), the separate living /cooking / bathroom areas, and always being able to stand up in it - are the three biggest positives vs the normal poptop / side kitchen layout. Perhaps add in the warm / solidness of the hardtop in early season.
I don't know anyone who has traded down from a T5 to a 4. The 4's are much more of a van-like driving experience. They feel heavier, and the gear-stick is floor mounted and 3' long! They are probably a touch noisier and their suspension less sophisticated. But they are strong and the Westy conversion so solid vs the T5 Cali.
If going to a T4 was too big a step, there is obviously the Westfalia Joker. I'm not convinced the layout is any better than the Exclusive (although I wouldn't turn one down!). What would cause a worry is having something worth £60k sat waiting for high days and holidays, vs the less than £20k I have now.
Hope that helps. I'll pm if I'm coming to Lytham.