I dont think it is possible to wrap up a mega arc like Wano in 4 chapters after fights when he spent 12 chapters wrapping up Dressrosa.
ch1050 - bam, Kaido drops.
ch1051 - bam, Momo shogun.
ch1052 - bam, bath and Admiral silhouette.
ch1053 - bam, Admiral and bounties.
ch1054 - bam, on the road to Elbaf.
If he were to go from finishing a fight to leaving Wano in 3 chapters, he would have gone insane.
I think Wano is far from done, at least 15% left.
I dont know how anyone can think Wano has ended when nothing in Wano really ended.
This one-month break seems a trick for Oda to stretch ZKK to November for Zoro's birthday.
Countless plotlines are left pending. Fandom is just impatient as usual.
Yamato joining is fine I just worry with how much story is left she won’t get much if any focused character development besides 1or2 fights and fulfilling odens will, hope she can build some differing relationships with some straw hats atleast
But… do you expect Yamato to get another arc focused around her? I don’t.
The significant difference between Yamato and Robin/Nami is that Yamatos villain was in the same arc where she joined. Robins wasn’t we never actually saw the world government until Ennies Lobby. Namis wasn’t we didn’t meet Arlong till later.
But Yamatos entire life was about Kaido and Oden. Two wano centric characters, I don’t know what could make her grow more after wano afterall
Yamato's connection to Ace who the crew met in Alabasta was brought also around half way through during the raid.
Yamato battled alongside Luffy and held off Kaido. She took care of the giant for Frank so he could focus on Sasaki.
Yamato also dealt with a situation to not worry Luffy while he was in the middle of a battle with Kaido when Momo was wanting to stop Luffy showing trust between Yamato and Luffy. Luffy trusts Yamato to stop Onigashima and Yamato trusted Luffy to beat Kaido.
Again your nitpicking scenarios to try justify why Yamato can't join when in fact she's done more than enough when you look at it objectively.