#4 Focus more on wrestling
If there is something WWE needs to learn from the popularity of Kevin Owens, Sami Zayn, AJ Styles, Shinsuke Nakamura, etc., it is the importance of wrestling.
After all WWE is (or is supposed to be) all about wrestling. Vince Mcmahon did add a great touch to improve traditional wrestling by infusing interesting storylines, but in-ring action should remain the crux.
No one remembers a RAW episode that didn't start off with a promo from some authority figure. They invariably dominate the in-ring action and hog the main event spot.
Segments like The US Championship Open Challenge saw some great matches and the fans loved it. This must be enough for WWE to realize that people are more interested in watching two superstars compete than to see Enzo Amore try and woo Nia Jax!