Since Kuma is now at MG, maybe we'll see this guy in action. If Kong kills Kuma, then the Revos will have no choice but to begin a direct assault on the WG.
Also, Kong is in charge of both Cipher Pol and the Marines, so on the other hand, if Kuma manages to kill or seriously injure him (outside of the Gorosei), no one will be able to control either group.
With either result, the Battle Royale between CP, Marines, Revos, and Pirates is incoming.