Since we were talking about foundations, let's take that discussion and flip it over! What is it with architects and flat roofs or low pitched "slab" roofs? It seems to me that an awful lot of "architectural" houses incoroporate flat roofs or low pitched roofs into the design. You see this in many of Frank Lloyd Wright's designs and in designs going back to the 60's up through today's modern and avante-garde designs.
But on a practical side, I have never seen a house with a flat roof that didn't eventually leak. I have talked to many roofers over the years that feel the same way. So if they are flawed, why continue the infatuation?