How to fix the Edmonton Oilers woeful power play in one obvious step

When it comes to what went wrong with the Edmonton Oilers in 2017-18, everyone knows that a big problem was the power play.
It dropped from being one of the most deadly power plays in the National Hockey League to being one of the least deadly.
But what exactly went wrong? Simply put, the coaches had the wrong players on the ice so the top unit could not muster nearly as many deadly scoring chances as it had in 2016-17.
The Oilers went with the same players and the same basic formation as the te