Your second point is spot on... almost. It's still too complex. The key part is "Build a better bathroom". The problems with North American bathrooms, as the

Your second point is spot on... almost. It's still too complex. The key part is "Build a better bathroom". The problems with North American bathrooms, as they are used today, is that they are multi-purpose rooms. You got a bath, a sink, a toilet, a cabinet, our toothbrushes and toothpaste hanging out, towels hanging out, make-up, hair products, etc. etc. etc. What a mess! Look at Japan where a bathroom is just that: A bath in a room. There's a wash area outside the bath. The floors are tiled and the whole room is self contained for the express purpose of washing yourself and soaking in a relaxing hot bath. Then you have a sink room that often doubles as a change room and may contain the clothes washing machine. This is where you have your personal care products. Finally you will have a toilet in a closet. A completely separate and small room with a toilet. The top of the toilet, where the water fills the tank, has a spout where you can wash your hands before that water goes into the tank. Three separated areas each with a designed purpose. Another benefit? You can be making a real stink on the toilet while the wife is taking a relaxing bath none the wiser. Cleaning such a bathroom is easy. Just hose it down and there are automatic products that can do that. Cleaning the sink area/change room is also easy and a robot would be fine for this application (and Japan loves robots!). Cleaning the toilet area could also be handled by a robot but it would have to be small enough to get in behind the toilet. And that is where a better design for a toilet would be valuable. Maybe better to build a "back of toilet" cover that is nearly as tall as the toilet bowl rim and comes out 1/2 the way from the wall... you know, like they are on airplanes.