#1 Kevin Owens versus Shane McMahon

As much as fans want to paint Shane McMahon as the worst thing on television right now, his role on SmackDown Live is playing a large role in the company being really interesting to watch. There's just so much tension between him and Kevin Owens right now and as a fan, it makes you want to tune in to see what happens next.
Another thing contributing to that is the fact that McMahon is starting to use his role in WWE to make Owens' life a living hell.
Not only does this allow WWE to continue to build up the tension between the two, but it also gives fans an eventual payoff when Kevin Owens goes off and attacks Shane McMahon.
If nothing else, WWE has done the most important thing they can do in a storyline, and that is to get fans to care about it.
In fact, between Kevin Owens being the everyman anti-hero and Shane McMahon being simply unbearable, it's working to put fans into a frenzy and make them eager to see what's next.