Can you make a hollow 'Jump and play' prim, pulleez?

[Fennet Resident]

I wanted to cover my house with a jump and play so my megapuss could have a suitable site to conquer, but I soon realized that the prim would block me from entering the building. So I experimented with laying the prim on its side, knowing that it would probably not work, and it didn't, of course.

Would it be possible for the amazing kittycats scripters to script a 'jump and play' prim in such a way that it could be hollowed out from side to side, instead of top to bottom?

I'm a bit of an amateur script modder myself, and it doesn't seem to me that it would be too hard to do. I've bought 4 studio boxes already, and I will certainly buy another if you can make one for me that can be hollowed out so I can walk inside, but the cats will still jump on top.
Then I can cover my little house, and both me and the giant cat can play king of the castle on the roof.

Please please please?

I already have them in the trees, but they're just not big enough for the fat cat.