How's this for a novel idea?
When they go through the door expecting to enter the big brother house, its actually a plane cabin. They are then told to sit down (at gunpoint) and put their belts on.
They are then treated to several hours of propaganda from their great Leader Kim Jong-il. When they arrive in North Korea they are given their own uniform, their own 1 room house, their own radio (tuned to government radio station only of course) and their own field co-operative to harvest food from.
And then they are never seen again.
For once the viewing population receives entertainment, the contestants learn what its like to live in a de facto authoritarian/totalitarian Stalinist dictatorship.
And what's best about this? In Kim Jong-il's dictatorship there are no winners and no losers!