You're absolutely right that I've never bought a new house because exactly as you note, the floorplans of new construction are built to maximize profit and wow

You're absolutely right that I've never bought a new house because exactly as you note, the floorplans of new construction are built to maximize profit and wow naïve buyers when touring the house. That doesn't change the fact of my statement: The way we design houses is worse for our psychological health. Therefore, there is an opportunity to improve our mental health by designing them different. There may be economic problems in the way of that opportunity, but the opportunity is still there. By "opportunity" I don't mean "easy thing we can do" I mean "understood problem that is possible to solve".