Anna Maria Louisa Italiano, known professionally as Anne Bancroft, was an American actress, director, screenwriter and singer associated with the method acting school, having studied under Lee Strasberg. source
Maintain 'baseball cards' and/or 'believability matrixes' for your people. Imagine if you had baseball cards that showed all the performance stats. 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.