
Thanks, Moneto-chan.
I look at the Mugis vs Kuros match-ups through counters.
Whatever the Mugis offer, the Kuros offer a counter to it.
For example, Luffy is a DF merchant, the counter to that is anti-DF merchant - Blackbeard(due to Yami).
Zoro is a swordsman, the counter to that is anti-swordsman - Shiryu(uncuttable body due to Suke).
So, when it comes to Sanjino the heat-based fighter, the counter to that is cold - Kuzan(due to Hie).
Now, I dont know if it will be specifically Kuzan himself who fights Sanjino or Kuzan will be killed and someone else will eat his fruit to fight Sanjino but I am convinced that Sanji's heat will face against the cold, as it is a direct counter, fitting the theme in all other fights.
I also think that Vivi will soon re-join them because she asked when she comes back if they would consider her one of them and she will likely become a decent fighter due to a broken DF which I think will be Kuma's DF, likely the one that Lily, her ancestor also had.