So why wouldn't the opponent just chip and chase to one side and overload that to insure zone entry on a PP? So few players even think to chip it off the boards or anything like that. Another option, one never used, is to Just blast a slapshot so hard it might hit some of those players holding the line, or at worst bounce off the end boards making it difficult for the goalie to play.
If I'm seeing that blueline as a set I'm looking at ways to exploit it.
Further to this is with a new coach, and a new goalie teams don't really know what to bring right now. Theres more uncertainty for opponents than there would normally be.
But that's the advantage, temporarily, with any changes like this. Remains to be seen if the positive stick. Coaches and teams will make adjustments just like they did in response to McLellan or Talbot.