If you go back and watch the first 2 games. I think you find KP getting the ball a lot more at 1st receiver. Getting himself involved in the game.
Since then, he has moved away from 1st receiver whether through coaching or personal choice, and just isn't involved in the game as much anymore. The ball is going to Crossland, Sharpe or Cogger and only 1 of them is actually an NRL half, and that one most agree is not any good at it.
I mean I don't think you need a coaching for dummies manual to work out if the first player getting the ball in hands is a ball runner and not a playmaker, than likely the chances of something great coming from them is minimal.
Look at Souths, they had injures his the halves and who did they move in to the halves, Latrell, one of their most dynamic attacking players. Yet we play our best creative, dangerous attacking weapon away from the ball as much as possible.