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>We didn't get a proper Team Plasma arc in Best Wishes
>We don't see Ash meeting N in Accumula Town
>We don't find out that Cilan and his brothers are secretly the Shadow Triad
>We don't see Cilan deciding to travel with Ash because he knew that Ash saw Zekrom and might be one of Unova's Legendary Heroes
>We don't get any subtle hints of Cilan training Ash to be the very best, like no one ever was, and keeping Ash out of danger, so he can be a worthy opponent for N to crush
>We don't see Ash and N develop a rivalry as they cross paths various times throughout Unova
>We don't see Team Plasma stealing the Light Stone for N to use
>We don't see Zekrom promising to help Ash in his hour of need, or alternatively, Ash finding a Dark Stone
>We don't see Ash just about to win the Pokémon League, but be interrupted by N's debauchery
>We don't see a shocking confrontation between Ash and Iris and Cilan when the latter reveals his true identity
>We don't see Ash and N have a breathtaking battle with their dragons for the fate of the country, which Ash ultimately wins
>We don't see Ash redeeming N, Cilan and his brothers
>We don't see a post-league B2W2 arc where Ghetsis captures Kyurem and attempts to fuse it with Reshiram and Zekrom, forcing Ash and N to stop him
>Best Wishes could have been the GOAT series, but wasn't