Love this idea for master bath doors. Fabulous solution when space is too tight for a standard hinged door. You can also put furniture on the walls next to this opening, just leaving enough space behind the furniture for the doors to slide.
Now here is an idea for the wall you face from the entryway! Do a skylight in the hallway and then a living wall to accommodate many of your plants! There are systems to automate irrigation and allow for easy removal / swap-out of plants as it grows!