On another note, Jack being the same age as Yamato and Kaido being much more in favour of him, showing concern for him and being respectful, forgiving and caring towards himas opposed to how he contrastingly treats Yamato by far, is a REALLY interesting storyline and glaring insight into Kaido as a character and his personality, beliefs and such.
I definitely want to do a video exploring this, especially to also throw in my own personal headcanons too!
I've joked and theorised that Kaido sees Jack as the son he always wanted/never had and he even said he picked out Jack to be an All Star personally, which means Jack didn't have to defeat an All-Star or even fight Kaido or do whatever it takes maybe to earn his position, maybe he just impressed Kaido with his sheer strength, authencity, will/drive/ambition and resilience? Probably got his fruit as a gift from Kaido unless he had prior to joining Kaido and that helped sway Kaido's interest in him naturally?
Jack vs Yamato could have been an amazing matchup potentially. Jack idolising Kaido and lamenting Yamato for disrespecting Kaido, going against his wishes and disappointing him, letting him down BUT Yamato retaliates with how much of a literal abusive, cruel monster Kaido is and wants nothing to do with him. You could have this wonderful, intense contrast of perspectives, beliefs, experiences etc. Plus an all out fight between two extremely strong characters ofc!