Allright, this is my last out of topic post. Every famous line added something new to the hockey landscape. The punch line (Richard, Blake and Lach) added forechecking in an era where everybody was going back when losing the puck.
The Esposito line with Cashman and Hodge played the corners and the slot like never before.
But the dumping of the puck was used as an offensive tool by the line of Gordie Howie, Ted Lindsay and Sid Abel: they would dump the puck, force the defenseman to turn around which was not in the required skills at the time, and race to the corner. When Howe or Lindsay would race you to the corner it was terrifying, especially when there was metal screen instead of tempered glass over the boards.
Then they began dumping for line change because few were able to use it offensively.