I'd unironically love this. I think the SHs should get an Admiral to join them as a parallel to Blackbeard and since Kuzan chose the BB pirates, that leaves only Kizaru and Fujitora ofc.
Green Bull is absolutely out of the question, him and Zoro would fight over who can be the most racist and have a greater rivalry than Zoro and Sanji. /s
I really would love to see Fujitora join but the SHs need a Logia and he obviously isn't one. Fuji would be great to stay in the Marines and reform them along with Smoker, Tashigi, Helmeppo, Koby, Drake etc. (I'm assuming the ones in Sword will be reinstated into the Marines, a new reformed, better version of the Marines that is more humanitarian by far and less corrupt etc with a new Fleet Admiral in charge, with Akainu inevitably gone eventually imo and possibly dead too.)
I cant see Fuji joining the SHs because hes a swordsman too, we have 2 swordsmen in the crew already and since Fujitora uses 1 sword like Brook, having them both in the crew is excessive imo plus too many swordsmen in general. I would have had Yamato join and have her actually using Odens swords, adopting his fighting style and thus being the 2 sword fighter er "Twin Swordsman/Double Swordsman" whatever of hte crew and you could argue she could also help Kuina accomplish her dream vicariously too. (Assuming you dont regard Yamato as male regardless, lets not argue about Yamatos gender please lol.)
But honestly, the SHs should get Yamato and thus a Yonko commander and child of a Yonko to join (Uta could have been a possibility if Oda didnt chicken out with her and just used her as shameless sales boosting/merch bait for horny weebs), Carrot and Kizaru, thus covering the need for both a new female member at least and also a Logia.
Kizaru could add another science element to the crew, even being the scientist of the crew, although I was hoping Lilith might join instead to be the scientist of the crew and a new female member too. She could bond with Franky and probably Chopper and Usopp too. Maybe even Sanji, well he certainly would try at least lmfao.
I've gone way off a tangent here but I'd love Kizaru to join, I'd love for him to be freed from his shackles of being a "corporate/government slave" and despite Oda drawing him "happy" as a child, he might still have a sad past at least, as we still ont know a LOT about him including why and how he joined the Marines and thus why he's so loyal to the WG too.
Oda has been implying if not also downright stating/showing Kizaru is against this and despite his role and authority, his responsibility as an Admiral, he can't bring himself to kill the people he adores and knows so well, despite the fact he's supposed to be a completely subservient killing machine with no emotions, an extremely powerful, obedient "dog soldier". (Like a certain red dog Fleet Admiral who took this to heart the most by far ofc). In a way Kizarus situation is not so different to Kumas and the Pacifistas. A killing machine raised to be a slave to higher authority, darkness (ironically for a light themed, bright man) and not allowed to question/resist/refuse/disobey/whatever orders and have hesitations, personal biases, allegiances, empathy, remorse, compassion etc.
I've suspected Kizaru was holding back against the SHs at Sabaody too, he was taking so long to charge his kick/laser against Zoro, when he should be the fastest character in the series regardless? Literal light powers? He didn't even kill anyone, unlike the most lethal character himself Akainu, who Kizaru is seemingly close with ironically ofc, but that might all be an act on his part too.
Kizaru being freed from being a prisoner of the WG who can't say no, can't rebel, can't fight back, can't disobey is something extremely poetic and beautiful imo. Luffy's whole thing is rescuing people, even though he claims hes not a hero and he just wants meat and to be pirate king. Hes so modest/humble, that he doesnt care about recognition for saving lives and freeing people, he just wants others to be as free as he is and Roger was and for others to be able to dream like he can, to live their dreams, to chase them and accomplish them like he wants to and is trying.
My favourite part of Luffy and One Piece's writing is how he liberates countries and people, how he saves the people who need help the most. The infamous scene of Nami begging for help against Arlong, Usopp, Nami, Robin , Chopper all desperately needing help but all the SHs even and also their allies like Vivi, Rebecca, Shirahoshi etc, its one of the most beautiful themes and its also something I loved about Bleach, Naruto, Fairy Tail etc.
If Oda actually does this storyline with Kizaru and has him join as a SH with Luffy rescuing him from his personal hell on earth, saving the light trapped within the infinite darkess of the WG< the black hole of corruption, I can no longer slander and complain about Oda anymore, I will be so happy, I will have to call myself Joy Boy too lmao.
I think Kizaru is a perfect fit for the crew too, hes hilarious, goofy, laidback, I can see him having hilarious chemistry with the SHs and bonding with Franky the most, but maybe someone laidback and thus calm and happy as Robin but also Luffy himself ofc. Kizaru saying, "well I'll be a monkey's uncle" would be the most hilarious and meta opportunity too.
There's this hilarious edit of a ton of different OP characters saving Luffys life along with Ace at Marineford and it's one of the most funniest and wholesome things I've ever seen, a ridiculous shitpost that actually has way more heart and soul than it probably should and maybe deserves too:
https://www.reddit.com/r/MemePiece/comments/z2gwrs
Even they believe in "Uncle Kizaru", the "Monkeys Uncle" too!
I was just reading a theory earlier on how Lufffys Sun God powers may be the reason Kizaru could awaken his DF as Kizaru is light ofc and thats why Kizaru can't move at the moment as hes is transforming like Luffy did.
This is probably extremely wishful thinking/delusion like the Jika memes but that doesn't it being so much fun to believe in either.
I actually wanted Luffy to help Kaido with his depression/wanting to commit suicide, I thought Luffy would help him overcome his depression and once we had the "are you having fun Kaido", Gear 5 being all goofy and toon force and Kaido laughing and being happy for a part of their fight and it being revealed he was waiting for Joyboy to appear, I thought we might get an eventual redemption arc for Kaido, where he gets his glorious death protecting Wano from a Blackbeard pirates full invasion or the WG and Marines and he dies similarly to his former crewmate Whitebeard, whilst fulfilling his role he is supposed to have due to his fruit, the "guardan deity".
Kaido could get a sort of redemption by death and we could have an arc of Chopper, Law, Marco trying to cure the Smile afflicted users and Queen begrudgingly ends up helping out to cure it somehow. King ends up helping to protect Wano too, becoming the one to run the Fire Festivals and provide a beacon, a torch of hope and inspiration for the people of Wano, the undying flame, the flames of Oden or something too.
I also wanted the doctors especially Chopper to diagonise Big Mom's eating disorder and help her cure it too. Given all the themes of famine in Wano and BM being there herself, it would have eben the perfect opportunity to cure her as well and BM could also end up trying to protect Wano potentially, maybe adopting Tama and Toko and staying there to protect them or having Smoothie stay in Wano to help protect it too. And then I can ship Smoothie x Yamato too /s.
I remember seeing an awesome idea of Smoothie using her DF to squeeze out whatever causes the Smile victims to be the way they are and thus she could also cure Killer too or whoever cures the Smile victims, ideally Chopper ofc especially, could cure Killer too and thus make Kidd and Killer into intentional and thus more supportive allies as well then out of gratittude.
Again I'm going on tangents, but I'd love Kizaru to be on the crew regardless, I love the idea of Kizaru being liberated, being freed and Luffy being the one to bring light into his life too ironically or poetically even.