#6 Mix up the sometimes stagnant world title picture

If there's one thing the WWE has a tendency toward, it's having the same handful of Superstars compete for the world title on a rotating basis.
For much of the mid 2000s, men like John Cena, Randy Orton, and Batista were in nearly every pay per view competing for or defending one of the 'big belts' from Raw or SmackDown. This led to stagnation which turned off a multitude of fans.
By freshening up the world title picture, and allowing new and exciting challengers to have their day in the sun, WWE can hold their fan's interest. An excellent example of this again involves Kofi Kingston, and also Kevin Owens. The two men are relatively new to the main event picture, though Owens flirted with it in the past and is a former Universal champion before sliding down the card. They have never worked a program against each other for a long term, either, so fans are getting something new. WWE needs to do more of this if they want to retain their fans in the face of AEW's challenge.