[jennyjuniper]

A more diverse and interesting selection of housemates. Less 'models' and reality tv wannabees and none that already have an agent.
A mix of people as in the Canadian house would be good. People who already have a career, but just want the experience (and the cash of course)

Don't treat viewers as if they are idiots.

Don't tolerate bullying behaviour, especially when it's just to boost ratings.