I think I have to read this a little slower and maybe try as I go - not sure I understand.
But, I think this is exactly what I have been trying to formulate in my head. Actually I wanted to make something like this for my dog. We bought a dog bed that looks like this (different material) and Milo loves it. He actually climbs inside, we call it his sleeping bag. As I looked at yours, I think it could also be a nice bed for my DGD dolls. Hope I can figure it out.