You'll notice good and bad designs around you, if you pay enough attention to the surroundings.
Every time I go to a public restroom, I pay attention to the door handles for the cells and how the doors open. I found it very inconvenient when it requires to push door inside to open. That literally gives you little or no space to move around with the door stuck in the middle of the cell.
There are restrooms built with great considerations for humans. The other day, after washing my hand and ready to step out of the door (leading to the restroom), I saw an extra widget on that door to help you open it -- a bar that you can simply hold with your wrist, so that you can "wrist the door open" without touching the door handle using your newly washed hands. Brilliant idea!
