The reason the puck is on the perimeter the entire time is that the players never move, except maybe a few feet back and forth from their set positions. No passing lanes are ever going to open up if all you do is move the puck around the outside, It's almost like they're trying to wear down the penalty killers and wait (hope) for one good chance, instead of creating their own chances with constant movement.
It's the same thing that's plagued the PP for years, no matter who the personnel or the coaches are.