Who do you think is Luffy's next enemy?
I just want the yunkos to fight and this system will be completely destroyed and only one person will be the king
bb doesn't seem ready now, he's a long way from Luffy and he needs some fruits..Shanks or Akainu are really interesting opponents
Imo, if a Vegapunk arc is in fact next and it tackles Kuma, Bonney, Smoker, Sabo, Revo's etc. Then it could be Kizaru.
Kizaru is close to Sentoumaru, who is Vegapunk's bodyguard. Pacifista (at least protypes) use Kizaru's laser powers.
I think all of this is inherently connected, especially since Luffy did not master FS yet, so fighting someone at light speed would be an interesting curveball.
Again, that's if Vegapunk is next and we are dealing with the SSG and these "Serephim". It largely depends on if these are truly Final War centric things or not.