They need to do this. The athletes have changed, the game is faster. The NHL is even exploring their rink sizes as well but it's more challenging for them. You have to compensate for the changes in the people who play the game and surely a wider field is better than the terrible penalties and rule changes they are going with so far. Nobody likes that shit, a wider field doesn't change what football is however.
I don't know why you'd say don't be like the CFL, has you've adopted our rules over the years. Your game is shifting in a wide open spread passing game, which has been the CFL for decades. You took the 2pt rule into play, which you had before then dropped, but we've always had it. You had Kaep/Wilson playing for the Super Bowl, they are the CFL mold of a QB eh? Everyone seems to enjoy the fuck outta these players, but lets be Anti Canada for the sake of being Anti Canada.
The NFL has trended towards the way the CFL has always been played over the past 10-15 years, whether you want to admit it or not.