Oh no... I surely put Kidd on a higher standard than Law... I'm just saying that Law knew the way of becoming on the victor side by just siding with Luffy instead of antagonizing him... this way he gets more screen time on the victor side instead of losing LOL
Honestly, the way I would have written Kidd character would be different this arc... if I wanted him to face Luffy...
First,
1- He entered the new world and he was crucifying people like a sadistic maniac (kinda like Jack with Zou)
2- I would have made Kidd the REAL betrayer of the alliance... not Apoo, him and Killer are with Kaido from get go
3- WHY does Kidd follow Kaido? he doesn't follow anyone... nah it's not that... Kaido is simply HIS IDOL since he was a little boy like how Luffy saw Shanks...etc.. and Kaido gave him proper care and trained him and tried to give him everything he wants
This way, you build up the Kidd as someone who can STILL rival Luffy after Kaido's defeat, and his driving motive is his hate for the guy who took down Kaido... at least a justifiable excuse for hating Luffy instead of just acting like an edge lord who doesn't care and just taunting luffy while helping him
Sorry mate but all this is a mess, Kidd had not even intention to attack Kaido. He was plotting against Shanks with his alliance (after he lost an arm against him).
He had bad luck cause Apoo was a snitch and Kaido fell on their heads, but didn't back down cause he is a Conqueror like Luffy and prefered to take the beating rather than kneeling like Hawkins and Apoo.
Killer too stayed with him just like Zoro would have stayed with Luffy.
He's for sure no saint (we are talking about pirates at the end of the day) but you are essentially trying to depict him like a fool similar to Jack when Oda's intention is a whole other thing. Your it's pure downplaying.
He is now in Onigashima to revenge himself and his crewmates (Killer in particular), it's impossible to know for sure how large will be his role in taking down Kaido. Imo he will be top 3 for sure for relevance but lets see.
Also his plot will continue in the future with Shanks, he was his objective since day one and will keep being it in the future.
Also don't get fooled by thinking that the rest of the story will be wrapped this fast, the journey is still really long.