At best, Scalia represented the opinions of an opinionated and influential but not truly representative minority of the population.
Now - there's nothing in the constitution that says explicitly that the Supreme Court should be a representative body.
But the political reality is that judges aren't picked for the SC because they're the best legal minds of their generation - they're chosen for their legal minds and for their politics.
IMO, in a representative democracy, the political values of the judiciary and especially of the SC should be broadly similar to those of the population.
Did Scalia bring the SC closer to the values of the median population, or did he move it away from the median?