Bar Shaker,
No, getting a fridge in the back is related to size and it is now possible to build a pfa permit aircraft with four seats, i.e. the most popular size for touring aircraft.
The analogy is more like having a car that could only drive on some of the roads, only in certain weather conditions, and only during daylight.
There is a lot of confusion among some pilots about what are VMC, IMC, VFR and IFR. Some pilots think they are in VMC and therefore entitled to fly VFR when in fact they are in IMC (still clear of cloud and in good vis) and therefore can only fly legally IFR, which you cannot at present do in a pfa permit aircraft!