Bigger is Better
With large floorspace a builder has the responsibility of designing with flow in mind. Homes are built for humans and humans come in a large variety of type and style.
Hence a fantastic design should help a variety of homeowners by being fantastic and approachable, meaning it will accomodate furnishings of all sorts, while achieving the main function intended.
Being a human design means allowing the free flow of light, because light is energy and we like energy.