[MaXtreeM]

Me and my wife also wanted to eliminate corridors as much as possible when we designed and discussed our house with an architect few years ago. Because of the property constraints and our other requirements about all of rooms we abandoned the idea of eliminating corridors and ended up with one long corridor through the middle of the house. After living in the house now for a few weeks we have no regrets - our son can run and ride in the corridor in the way he would not be able to otherwise and we found a way to decorate it that is quite pleasing. I am not saying that someone may be able to architect the house in other way to better use "wasted space" as you put it but we are very happy with our decision.