Imagine if you had baseball cards that showed all the performance stats for your people: batting averages, home runs, errors, ERAs, win/loss records. You could see what they did well and poorly and call on the right people to play the right positions in a very transparent way.
In all the great periods of the drama perfect freedom of choice and subject, perfect freedom of individual treatment, and an audience eager to give itself to sympathetic listening, even if instruction be involved, have brought the great results.

