I called the Prius Tent Company last year about making another version to include a 4x4 base area floor with zipper door to get in and have a privacy area you could stand in to change, wash, and take shoes off before bed. It would also be good for some items to be stored when sleeping.
They were not interested in the suggestion.
For me and my Prius travels there is no advantage of the tent the way it is other than ventilation and I solved my venting a different way.
Brent