Last wall standing
My wife is always watching The Property Brothers on the HG chanel. It seems like The Property Brothers is always on......(exageration) there could be just one wall in the entire home and The Property Brothers would immediately say, "We need to blow out this wall, open up the layout, let in some lights, etc". :)
I strongly suspect that the home renovation reality shows that are on a few decades from now will be just the opposite where they will come into an "open space" type home and say just the opposite....."We need to put up some new walls and make private living areas".