As much as I think the only beneficial thing for them to do would be to make the world smaller and include some meaningful content in it instead of just near-useless collectibles, I doubt Nintendo will do that. Judging by how many korok seeds are in BotW and how many Moons are in Mario Odyssey, Nintendo seem to be infatuated with pointless busywork, and since both of those games were huge successes they have no reason to do otherwise.
I hate the very thought of it, but
@Castle is most likely right, the next major Zelda game will probably be more of the same, emphasis on more. Over a thousand korok seeds, ensuring the bulk of the game will be repetitive collectible hunting. A continued focus on 'one and gone' shrines instead of actual dungeons with their themes, mixtures of puzzles and combat, imagination, and sense of progression (my God why did they think
no dungeons was the right move for a Zelda game?). Even more different types of weapons that they can only make mechanically relevent by making them last for two minutes so you constantly have to scavange new ones. More locations that have nothing for you to do but, hey, they look pretty.
For me, Nintendo proved that they don't actually know what to do with an open world with BotW, and so they just sprinkled in meaningless, vapid crap and hoped that having lots of it would make up for none of it being fun in the slightest. Collectibles and 'one and gone' might work in a Mario platformer but it kills an action/adventure. BotW requires you to find your own fun within it rather than providing fun things for you to do like every other Zelda before it. Whatever comes next will probably be more of the same, to the franchise's detriment in my view.