I've got not a short answer to that, but I'll try to summarize it taking the risk of miss some of my thoughts.
First of all, I'm very very happy with my Cali's configuration, it's a Cali Beach 140cv 4Motion LHD with two seats bench and, if I were buying it again now, I wouldn't change this configuration, maybe I would think about the 180cv option, but I'm not sure about that. Each Cali's configuration should meet the owners needs, and mine one do.
The way we travel is with no plans at all (or few plans): we drive to the location we want to visit and drive around, stopping anywhere any-when. This way to travel means no campings and overnight anywhere. We love do it in cities centre to be able to full enjoy each city (food, monuments, people, day/night) and, to do that, I usually set my Cali in what I call "ninja mode", with basically consist in pass as unnoticed as we can.
To set the Cali in "Ninja mode" obviously we don't open the pop roof. In my Beach sleep downstairs it's very nice because the bed is 150cm wide, but we cannot avoid play Tetris inside to set/unset it. I feel really jealous of those which just "park and sleep", with the proper size you can do still being in "Ninja mode".
Another reason is the shower. I'm working on that and hopefully I'll have a solution very soon to be able to have a shower inside my Cali, which means do it even in "Ninja mode", but obviously it will never be as comfortable as a bigger van.
The more I visit campervans and motorhomes shows and pop into models like Westfalia Amundsen/Columbus, Himercar, etc... the more I think those vehicles could fit better to me.
I don't think I'll decide to go for one of those easily, but who knows, anything could happens if the proper opportunity comes out.