I'd like to see a shift back to the old games where there was maybe one town of people and then the rest of the world was enemies. So, just Hylians in that case. Maybe Zoras and Rito, maybe Subrosians if the story includes them. Definitely Gerudo.

I don't particularly want to see Gorons (loved them in MM and TP, but not elsewhere), Kokiri, Koroks, or Dekus.

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My timeline theory:
Same sword, different day.