#1. To give us fresh matchups
Although Shinsuke Nakamura has been part of the WWE main roster since 2017, he has crossed paths with Roman Reigns only once - at the 2018 Royal Rumble. 'The Big Dog' and the 'King of Strong Style' were the last two men standing at the 30 man Royal Rumble match. Nakamura eliminated Reigns to earn a WWE Championship opportunity against AJ Styles at WrestleMania 34.
A Nakamura/Reigns rivalry could be a breath of fresh air in WWE and a departure from the same repetitive feuds that are displayed week in and week out. Also, what if Roman Reigns wins the title from Nakamura?
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We could see the return of the Intercontinental Championship Open Challenge - something Reigns did during his previous reign, drawing inspiration from John Cena's United States Championship Open Challenge. Imagine a 15 minute free TV match between Roman Reigns and Ali, or between Reigns and Sami Zayn, or between Reigns and Luke Harper. The WWE Universe could get amazing matches every week, if WWE were to bring back the Open Challenge. With FOX looking forward to a more sports-oriented show, the return of the Open Challenge could be a huge boost for SmackDown.