Random thoughts
I personally find no problem with a dman coming over and giving a little bump to a forward about to concuss his partner. It's how the game was always played when I feel in love with the game. It's how I played the game.
One could argue that may allow for a clean breakout, and countless offensive rushes the other way. Discourage teams to constantly dump it in, yawn. Make them try to play NHL grade offense. It may even cut down on concussions.
Players have never skated faster than they do now, and dare I think concussions are up over 30 years ago, despite presumed technological advances in helmet design and mouth guards, and suits of armor the guys now wear, all with less hitting. That little pick slows them down.
In that era of tackling guys on a breakaway in the 3rd period as some here say would always go uncalled, scoring was somehow higher than it is now.
Interference has not killed scoring. The lack of skilled players that fit the modern reshaped game, is the cause. Its largely a game of great skaters now, only the problem is everyone is a better skater, so it all offsets. A push.
Great, they are all better skaters now, but the skill level is decreased because of over expansion, KHL etc. So these guys with a lower skill level have to do it all at a faster pace. They can't do it, so they dump it in, and never get to line rush in games. If they are not getting PP time, they are not honing their skills. Eroding over the decades, and here we are.
Lard Ass in goal decked out in his XXXXL pillows is not helping matters.