I think that judges cooking with teams is a good thing. First, it might help the attitudes of each group. Neither group is god's gift and neither could do it without the other. Second, I think that if a judge understands the work that any team puts in, then they MIGHT be compelled to judge as ACCURATELY as possible.
Also, rest assured that if you get a 9-8-7-7-7-5... then you deserved a 7. Don't worry about the 5, you were not getting paid any way. And the 9 was just as wrong as the 5.