Interesting idea for kitchen and dining room. Island with a bench seat attached for the table. Might have to do something similar in my new place to save room for chairs. Under the bench seat could be storage for rarely used items.
walk-in shower - great way to keep air circulation and not worry about cleaning a glass door or washing curtains. I HATE SHOWER DOORS. If we ever build a house, I'll do a walk-in grotto-style shower and never scrub another nasty door again!