Thanks for that!
Well, it does seem feasible but I don't think they could divide the house until the number of housemates reduced considerably. I don't think even Big Brother would be so nasty as to force some of them to sleep on the sofas! So it could well come into play when the numbers are reduced to around 6.
There was mention way back of there being an outside toilet included in the house but, as far as I'm aware, there's been no mention of it so far. That would also tie in with the 'bad' side of the house.
They are being SO secretive this year!