IIRC most Pokémon (except for stuff that always floats, like Gastly and whatnot) have always had a grounded pose, it just wasn’t viewable in battle — you’d have to interact with it in Amie/Refresh to see it. Which is what I was sort of getting at when I talked on a previous page about opportunities for showcasing animation, and how Z-A, by virtue of having Pokémon that roam around in the world and by having them as more active participants in battle, creates a lot more of those opportunities than the classic turn-based battles.
I suppose it really depends on what their reason for including the Linking Cord was. Legends: Arceus had trading too, but I think the question is, was the reason they made trade evos optional because it was a standalone single-player game instead of a paired version (in which case, chances would look good for the Linking Cord being in Z-A), or was it because the game was so heavily designed around completing the Pokédex (which will probably be less of a factor in Z-A)?
Trading was shown off, which might mean the game does not have the Link Cable evo item
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I suppose it really depends on what their reason for including the Linking Cord was. Legends: Arceus had trading too, but I think the question is, was the reason they made trade evos optional because it was a standalone single-player game instead of a paired version (in which case, chances would look good for the Linking Cord being in Z-A), or was it because the game was so heavily designed around completing the Pokédex (which will probably be less of a factor in Z-A)?