It seems that Oda is showing us what each Admiral's Justice means, by making them do things outside taking orders from FA.
We were first Introduced to Ryokugyu's Justice, followed by Aokiji's, and now Kizaru's
It's also interesting how both Ryokugyu & Aokiji Attacked a New-Gen Character (Momo & Koby), who both finally Unlocked their Signature Attack & got Stronger (Blast Breath & Honesty Impact), and were both Saved by a Great Figure who supports said New-Gen (Shanks & Garp).
This is why i think the Remaining Admirals are gonna have similar Moments as well:
Kizaru is gonna Attack a New-Gen Character who still needs to showcase their True Signature Technique, who end up being saved by a Senior who truly cares about them, and that's possibly Bonney (Who ends being Saved either by Luffy, Vegapunk or Kuma)
Fujitora is also probably looking for Vivi, especially since He represents Humane Justice, which means He is gonna meet some Top Tier or Great Figure who would prevent him from taking her
But the real question is, Oda already finished with Ryo's Sub-Plot, Aokiji's Sub-Plot, and once He is done with Kizaru's & Fuji's, this would leave us with only Akainu, so what's gonna be his Sub-Plot? Which New-Gen Character (Needs to be a Weakling Character) is He gonna go after? And who's gonna stand in his way?