#2 Former WWE Universal Champion Brock Lesnar
A match between Lesnar and Shibata in WWE will be interesting because of their shared interest in MMA. Lesnar is a former UFC Champion. Shibata, too, dabbled in MMA in a less glorious career.
Lesnar will be able to light up the arena against Shibata. The carefully paced, brutal professional wrestling encounter would leave spectators wincing at the hard-hitting moves.
#1 WWE Intercontinental Champion Shinsuke Nakamura
Shinsuke Nakamura terms himself as The King of Strong Style, but if there is any man to challenge for that title, it is Katsuyori Shibata. A battle between two of The New Three Musketeers would be one for the ages.
Nakamura has wrestled a less-attractive, safer style in WWE, and it would be incredible to see him leaving it for the match, attacking Shibata.
WWE can even make the match more memorable by tweaking a few routines, the original name of Nakamura's finisher Bomaye, and inviting the third musketeer, Hiroshi Tanahashi, to be associated with the match in some way, be it as a guest referee or at ringside.