The secondary review is subjective, the initial penalties are not. As a direct result of the new rule almost every single one of the incidents sent to that review board is an accidental lift in the course of normal play.... there are very very few internationals anymore. It's completely removed the Matt Cooke-ism from the game of rugby.
I'm more than fine with running with rugby's example as a start. If the league would implement an automatic 5 min major, game misconduct and 5 game minimum suspension (remember, 1 game in rugby is 1/16th of the season which is 5 games in an 82 game season) for all headshots with a mandatory review to determine if there was intent and therefore further suspension I bet you'd see a huge change in player behaviour.
Now, gotta hop in a cab to head down to Rogers Arena to see if the Canucks can manage to do something against the Kings