Speak of the devil.
Also, in the canon narrative, Sabo has confronted Fujitora twice with far greater consequences (in DR and then in MG) compared to Zoro's little skirmish with Fujitora in front of the Coloseum. Seems like Lolda is setting up Sabo vs Fuji in the post-Raftel saga since he already hyped Sabo as an emperor, after all.
I also have to admit that you are right that, narratively speaking, Kizaru very nearly killed Zoro back in Sabaody and was the first trigger for the SHs to postpone their journey for 2 years. From this perspective, the Strawhat Pirates have a score to settle with Kizaru and having Cook vs Aramaki means Zoro has to be the one to repay Kizaru back.
I think we are going to get:
Luffy vs Akainu
Zoro vs Kizaru
Cook vs Ryokugyu
Yamato vs Gion
Jinbei vs Tokikage
The remaining SHs vs Tsuru and the Strongest VAs (bar Garp) matching the SHs' number
On the side, we got:
Sabo vs Fujitora
Law and Kidd vs Sengoku and Garp
Killer vs Smoker (not sure about this one)
@Fleet Admiral Lee Hung What do you think?