Do you want to see Mcdavid score 70 goals? Because the man is too fast for the league and he would make regular defensmen look like beer leaguers more than he already does. Better yet, your team plays the Oilers, Enjoy your 6-2 spanking.
Making NHL defenders seem more competent is the point in competitive balance. If it was all offense it would be seen as the NBA on ice. The NBA ratings are in the shitter because they went the all offense route and their league is full of flopping and soft play, no more driving the lane its all 3 pointers.
For every action there is an equal and opposite reaction. Fans complain about fairness, but it will be unfair if players that can skate 40 mph start blowing by everyone 10 times a night. Then fans will complain defense is bad and there is too many goals. NHL fans always whine about the game, they whined about the penalty amount during an era when they started to enforce the rules. Do you know what happened? Ratings actually dropped. Most hockey fans want to see the mucking and grinding mixed in with skill.
Nobody wants to admit this but no matter what the NHL does in terms of enforcing the rules, they will always lose because we will complain. Fairness is great, but if they call 100 percent every penalty robotic like with no room for human judgement or error, i don't know if the product will improve. It did not improved when they did just that.