I think the PPM's work excellent and should not be turned into tactics. The reason is this: When you play a lot, slowly the game turns into math. There is no way to address this in the end, cause the engine is of course math.
But the PPM's helps a lot. They have increased the sense that you are dealing with people, who do things regardless of what you tell them, and the tutoring part has ensured that these people also influence each other, just like people do (I remember Capello complaining that when he coached Michael Laudrup at Real Madrid, he had 20 players who all tried to disguise their pass by looking in the opposite direction, and it did not really work very well for most of them

) . If PPM's became part of tactics it would also become math.