One area where the Steelers could have competition is in their defense, as Sports Illustrated says, several teams will be copying their 3-4 alignment.
By the way, somebody should do a comparison between weak economies and the 3-4. When was the 3-4 defense last prominent? During the dreadful 1970s. During the next twenty years, the awesome power of the 4-3 defense paralleled the steamrolling stock market set in motion by Ronald Reagan and Paul Volcker.
Clearly, for the sake of the nation’s economic health, the NFL owes it to us to outlaw the 3-4!