Minimal Nesting Bathrooms

I have been considering the best ways to layout bathrooms and have what I believe are the minimal possible footprints using standard components. The full bath is fairly straightforward, but the 3/4 one (for those who prefer a shower stall style) creates some dead space when nested. Of course that area could be used for a closet or other items, such as a stackable washer and dryer. A shower curtain would need to be used or a shower with doors that open in place (there are a few). It should also be possible to adapt a sliding door meant for tubs using the space next to the toilet. These plans are minimal by intention, but the basic layouts can be expanded to create more elbow room. An along the wall or pocket door could also be employed, again using the space next to the toilet. A vanity for the sink, medicine cabinet, and shelves above the toilet tank (with removable bottom shelf to allow access) could provide storage. Towel hooks could be placed on the door.