#3 Think of the pairings
To go along with The King Of Strong Style filling a need for male heels on SmackDown Live, a heel Nakamura opens up a variety of doors as far as pairings for new feuds and matches.
Simply keeping the blue brand in mind, there's the aforementioned prolonging of the Styles feud, as well as possible pairings with an officially-face Rusev, Bobby Roode (provided his own heel turn isn't already in the making), each member of The New Day, and Tye Dillinger.
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Widening our scope to consider next week's Superstar Shakeup introduces the possibility of Seth Rollins, Finn Balor, Jeff Hardy, Braun Strowman, and Roman Reigns as viable babyface candidates who could be foes for evil Nakamura (not to mention stars currently out with injury, like Dean Ambrose, or part-time legends like Kurt Angle).
Speaking of pre-WrestleMania authority figures able to mix it up in the ring, we would be remiss if we didn't mention the best possible matchup for an evil Nakamura, the purest babyface on either roster, this generation's Ricky "The Dragon" Steamboat, Daniel Bryan.
All of these options could have been entertaining before the heel turn; after the turn, they're all big-money feuds that have the potential for classic matchups.