#1 Roman Reigns
Last but definitely not least, at #1 we have none other than Roman Reigns himself. On last week's Superstar Shake-Up episode of SmackDown, Reigns announced himself as a SmackDown superstar by coming out and nailing Vince McMahon with a Superman Punch. It was most certainly the best way to introduce The Big Dog. Reigns' exclusive debut on SmackDown is definitely a step in the right direction for him, as we will be able to see refreshing rivalries on the blue brand.
Out of all the superstar's on the SmackDown Live roster, Reigns seems to be the most worthy superstar to be next in line to become WWE Champion. Let's not forget that the last time Reigns was a world champion, he never even lost the title as he was forced to vacate the Universal Championship due to the return of leukemia.
Fast forward to the post-Wrestlemania season and Reigns is definitely one of the most over superstars in the WWE today. There is also the possibility that the fans would boo Reigns if he was to ever defeat Kofi for the title, but the chances of that are happening are unlikely due to Reigns' real-life struggles.
Ideally, if Kofi and Reigns were to feud, it would have to be a rivalry based on respect in order for the fans to accept either man as a winner. But as Reigns had stated when he arrived at the blue brand, SmackDown Live is his yard now. And there wouldn't be a more perfect way to complete his comeback story by becoming the new WWE Champion.