Access seems to be the primary distinguishing characteristic.
do you have a list of RV pyramid structures you can share? Ones that are precluded might be helpful as well, I think this may help clarify your position.
Do the Nubian pyramids fall under RV or something else, all of the Saqqara structures or just Djosers, every pyramid on the plateau or just the biggest...
I am wondering why they would build more than one RV in the same spot of course.