Garvins massacre the Rougeaus

Came across this clip from 1985, with Ronnie & Jimmy Garvin destroying the Rougeaus. It's called the St. Jean Baptiste Day Massacre and is a great old school angle that ignited a feud. Are you familiar with this and what lessons could WWE take from it today?

Yeah, they drew the largest house in the history of Montreal with that feud.  Although if the lesson is "do good angles" there's not really much there to impart.