Here is my ranger super cab.
Tbh I didn't really need a 4x4 but I chose it for its versatility, owning only one vehicle and carrying up to 3 passengers sometimes at weekends, I was struggling to find a van that fitted the bill in my budget and would meet all my needs.
Posting these pics just to illustrate the point that with a bit of thought you can fit everything you need in the back ( albeit not an ro system but then I didn't need to ).
I added the lockable hatch door on the side of the fiberglass hard top to make filling the 500 L tank easy and also gives good access to cleaning products placed in a bucket just inside the door. That's a S max 40 ( with 3 sections removed but would still fit ) resting diagonally on top of tank. Everything is accessible without having to drop the tailgate or climb in to the back and if the tank were empty I could have everything removed in 10 mins - very handy for me when I go away on camping trips