If i ever build a house it will have a Mudroom: and it needs a sink, and a small bathroom and shower right off to the side, BEFORE they drag into the house. The bathroom can also serve as the main floor bathroom for guests.
Entryway...love the storage, and bench. They built this themselves! I would do everything but the top cubbies, it's too high so I'd never use it. Maybe mount some art there instead.
Back wall of garage before enter the house? Simple built-ins to create a mudroom or storage anywhere from a kids room to a laundry room by adding shelves or a deeper bench for sitting. Or instead of custom, buy two thrify store bookcases and paint them, bolt them to your wall and add wainscotting between them. Then pick up a thift store bench and cut it to fit. Add the hooks and you're set.