Dear Joao,
thank you so much for showing us your magnificent work. I consider it one of the most interesting interior designs I ever saw in a travel mobile. Every inch shows the artist and architect behind. However, I admit liking the first version of the floor grille in the shower better:
But maybe this version was not stable or practical enough.
I understand that there were legal reasons for not connecting the driver's cabin and the living cabin. But did this apply to the seven seats, too? Otherwise you might have been able to use that space in the second row more practically, for example a stable bed or kennel for your dog, and a small cooling box, so you can reach cooled drinks without having to stop, a playing module for your younger, etc.
Wish you always a good and safe trip!
Marcus