He is the only person I can think of that would create enough interest for people to carry on watching it. He would have to gell with the other two though, as the interaction between the three of them is what carrys the programe.
Either way and slighty off topic, I will be suprised if Clarkson goes back regardless of the outcome of the hearing. He must be near braking point where everything he does or says, is being monitored for the slightest slip up.