In my eyes, Yamato is arguably one of the most uninspiring characters that Oda has come up with thus far. I will give reasons as to why I feel this way so if you disagree with me bring valid arguments to the table.
1. Yamato's design.
Females in OP usually follow the same pattern in terms of their design. This isn't something that usually bothers me but the issue here is that it feels very unconvincing that Yamato is supposed to be Kaido's child because of her average design. Comparatively speaking, most of Big Mom's daughters' have idiosyncratic designs that add to the credibility of them being BM's children. Yamato just doesn't have that.
2. Yamato's relationship to Luffy & the alliance.
Ever since her introduction she is basically just a plot device there to help Luffy and the others to fight against Kaido. There is no attempt for us to feel like her motivation for killing her own father is realistic. There is no gradual build-up with her motives. It's literally just her meeting Luffy and ''hey, I'm going to help you defeat my father'' or ''hey, we just met but let me on your crew''.
Most of the members within the alliance didn't just immediately join but we see them deciding to fight against Kaido and Orochi through their own personal convictions which makes it feel realistic and earned. Yamato is literally fighting against her own family but the credibility behind it feels ridiculous.
3. Yamato's role in general.
It's very common for Oda to introduce a lot of characters within an arc and that's fine but the issue is that a large percent of those characters end up doing almost nothing relevant. This brings up the question why some of these characters were even brought into the story in the first place. This is were Yamato comes into place. What has she done so far? Yamato has been running with Momonosuke and Shinobu fighting against fodder and pointless shenanigans even though it has already been established that Momo isn't going to die. Do we really need a side-plot like this in the semi- endgame of OP?
Oda could have simply skipped all of those pages and focussed on the Tobbi Roppo and the calamites which have been on the side lines for a very long time.
1. Yamato's design.
Females in OP usually follow the same pattern in terms of their design. This isn't something that usually bothers me but the issue here is that it feels very unconvincing that Yamato is supposed to be Kaido's child because of her average design. Comparatively speaking, most of Big Mom's daughters' have idiosyncratic designs that add to the credibility of them being BM's children. Yamato just doesn't have that.
2. Yamato's relationship to Luffy & the alliance.
Ever since her introduction she is basically just a plot device there to help Luffy and the others to fight against Kaido. There is no attempt for us to feel like her motivation for killing her own father is realistic. There is no gradual build-up with her motives. It's literally just her meeting Luffy and ''hey, I'm going to help you defeat my father'' or ''hey, we just met but let me on your crew''.
Most of the members within the alliance didn't just immediately join but we see them deciding to fight against Kaido and Orochi through their own personal convictions which makes it feel realistic and earned. Yamato is literally fighting against her own family but the credibility behind it feels ridiculous.
3. Yamato's role in general.
It's very common for Oda to introduce a lot of characters within an arc and that's fine but the issue is that a large percent of those characters end up doing almost nothing relevant. This brings up the question why some of these characters were even brought into the story in the first place. This is were Yamato comes into place. What has she done so far? Yamato has been running with Momonosuke and Shinobu fighting against fodder and pointless shenanigans even though it has already been established that Momo isn't going to die. Do we really need a side-plot like this in the semi- endgame of OP?
Oda could have simply skipped all of those pages and focussed on the Tobbi Roppo and the calamites which have been on the side lines for a very long time.
Who dare you sir
#Yamato4Nakama!!!!!! 
at least the latter showed some growth.
