I like this idea very much, and would be very happy if something like this were in Skyrim.
Did anyone else notice how in the latest Harry Potter they started out with this tiny little tent but by like 30 minutes later, they had this caravan with tables and cots and stoves and like EVERYTHING? ... I know magic is cool but they didn't even try to explain how she pulled tables out of her hat, they just hoped we wouldn't notice... I hope for Skyrim is IF it has these features, that the system makes a lot more sense.
I dunno... I didn't have too much of a problem with it. If you can have a bag of holding or a portable hole (which I believe Hermione has, although I'm not a big Harry Potter fan so maybe I got that wrong), a nondimensional tent isn't too much of a stretch.
At any rate, I do agree that the portable campsites should be kept within reason in terms of paraphernalia.