Family teardrop ideals?

I thought I would start a thread to explore different way to make a teardrop family friendly. I am a empty Nester but would like to see family being able to teardrop.Bunk are only good for one small child.
My thought it. A roof rack bed with a reverse clam shell lift up roof.
One would build a benroy with a roof rack. Put a bed platform on the roof rack.with a hinge on the back.
Then build a roof over your benroy with more of a curved front. The over roof could be foam with canvas inside and out.
The seal between the platform and the over roof could be a waterproof cloth that would hang from the platform down to the over roof when down and drape down in a loop when the over-roof is raised(no tight fit required).
When raised it would be like a Little-Guy setting on top of a benroy. But when down it would be a teardrop that is 6 to 8 inches taller ( the foam mattress will compress some when roof is down.
Problems
The climb up to the bed and the roof vent.
One could put a vent in the over-roof and cut a hole in the bed platform and mattress(not ideal but workable). the teardrop roof fan would move air through both the tear and the roof bed.
Just brain storming. Lets explore more ideals so there is options for family. Besides Tents
My thought it. A roof rack bed with a reverse clam shell lift up roof.
One would build a benroy with a roof rack. Put a bed platform on the roof rack.with a hinge on the back.
Then build a roof over your benroy with more of a curved front. The over roof could be foam with canvas inside and out.
The seal between the platform and the over roof could be a waterproof cloth that would hang from the platform down to the over roof when down and drape down in a loop when the over-roof is raised(no tight fit required).
When raised it would be like a Little-Guy setting on top of a benroy. But when down it would be a teardrop that is 6 to 8 inches taller ( the foam mattress will compress some when roof is down.
Problems
The climb up to the bed and the roof vent.
One could put a vent in the over-roof and cut a hole in the bed platform and mattress(not ideal but workable). the teardrop roof fan would move air through both the tear and the roof bed.
Just brain storming. Lets explore more ideals so there is options for family. Besides Tents