I'd second that the game is good enough to warrant a Switch purchase on its own, assuming you have that disposable income.
[BOTW puzzle spoilers below]
Comparing it to the Witcher 3 is actually a great way to highlight its strength--the insane depth of the mechanics. It feels almost like you're playing Nethack or Dwarf Fort in terms of how deep the mechanics go and how much the game designers allow you to do. Not _as_ deep, nothing's as deep as Dwarf Fort, but deep enough that I can make the comparison.
For example, both TW3 and BOTW have a mechanic where you can mix different ingredients together to give yourself stat bonuses. They both have you harvest the ingredients from the in-game world. Very similar so far. But in TW3, you mix them by going through some menu screens and clicking on the appropriate items. In BOTW, you take the items out of your inventory, hold them, and return to normal gameplay while holding them and can then choose to drop them anywhere in the outside world (ideally in a heated cauldron). But you can choose to drop them just in an open flame, and while you can't get potions this way, you _can_ cook ingredients like apples and meat to have them restore more of your health. But if you leave them in the fire too long, they'll catch fire themselves. And if it's a dry day and you're standing in the right (or wrong) kind of terrain, the grass underfoot may catch on fire, too. And it may spread (and start interfering with enemies--but that's another story). And there's more to it than that--if you drop certain ingredients in snowy landscapes or icy streams, they'll freeze over and give you heat resisting properties when they didn't before. And if you drop them in areas that are too hot (think side of an active volcano), they'll start cooking immediately, as if you had dropped them over an open flame in a standard area. You can distract certain a certain type of enemy by dropping food in front of it too.
The entire game is like this. For example, in another dungeon I got stuck on a puzzle that clearly wanted me to put two magic electric orbs on two switches, about 5m apart from each other. But for the life of me I could only find one of the orbs. After fifteen minutes of running around, I remembered that my metal weapons conducted electricity--I had found that out because I had gotten killed by a lightning strike while I was flying through a storm earlier, I ignored the warning sparking around my back and had to reload a save. So I dropped every metal weapon I had and dragged in a metal chest from another room in the dungeon and made a circuit from one switch to the other with the single electric orb in the middle. And it totally worked to solve the puzzle. (Looked up where the second orb was later and I was blind to not notice it, whoops.)
It doesn't have the depth of writing that TW3 does, the characters are more cartoonish and less nuanced and the plot itself is much more straightforward and doesn't have a tenth of the subterfuge. But the writing isn't poor, either, it's done extremely well for its style. It comes across as very Ghibli-esque to me. Zelda's character in particular is nuanced and an interesting examination of their old tropes without fully subverting them, and the way they reveal the story to you is through a series of clever small vignettes that overwhelmingly choose these small intimate moments that manage to imply so much more than they outright say.
It's unabashedly 11/10 GOTY and maybe "game of this generation" to me, though I'm trying to give myself some time to get over the initial rush before I make that kind of call. Blows TW3 out of the water, and I loved TW3.
[BOTW puzzle spoilers below]
Comparing it to the Witcher 3 is actually a great way to highlight its strength--the insane depth of the mechanics. It feels almost like you're playing Nethack or Dwarf Fort in terms of how deep the mechanics go and how much the game designers allow you to do. Not _as_ deep, nothing's as deep as Dwarf Fort, but deep enough that I can make the comparison.
For example, both TW3 and BOTW have a mechanic where you can mix different ingredients together to give yourself stat bonuses. They both have you harvest the ingredients from the in-game world. Very similar so far. But in TW3, you mix them by going through some menu screens and clicking on the appropriate items. In BOTW, you take the items out of your inventory, hold them, and return to normal gameplay while holding them and can then choose to drop them anywhere in the outside world (ideally in a heated cauldron). But you can choose to drop them just in an open flame, and while you can't get potions this way, you _can_ cook ingredients like apples and meat to have them restore more of your health. But if you leave them in the fire too long, they'll catch fire themselves. And if it's a dry day and you're standing in the right (or wrong) kind of terrain, the grass underfoot may catch on fire, too. And it may spread (and start interfering with enemies--but that's another story). And there's more to it than that--if you drop certain ingredients in snowy landscapes or icy streams, they'll freeze over and give you heat resisting properties when they didn't before. And if you drop them in areas that are too hot (think side of an active volcano), they'll start cooking immediately, as if you had dropped them over an open flame in a standard area. You can distract certain a certain type of enemy by dropping food in front of it too.
The entire game is like this. For example, in another dungeon I got stuck on a puzzle that clearly wanted me to put two magic electric orbs on two switches, about 5m apart from each other. But for the life of me I could only find one of the orbs. After fifteen minutes of running around, I remembered that my metal weapons conducted electricity--I had found that out because I had gotten killed by a lightning strike while I was flying through a storm earlier, I ignored the warning sparking around my back and had to reload a save. So I dropped every metal weapon I had and dragged in a metal chest from another room in the dungeon and made a circuit from one switch to the other with the single electric orb in the middle. And it totally worked to solve the puzzle. (Looked up where the second orb was later and I was blind to not notice it, whoops.)
It doesn't have the depth of writing that TW3 does, the characters are more cartoonish and less nuanced and the plot itself is much more straightforward and doesn't have a tenth of the subterfuge. But the writing isn't poor, either, it's done extremely well for its style. It comes across as very Ghibli-esque to me. Zelda's character in particular is nuanced and an interesting examination of their old tropes without fully subverting them, and the way they reveal the story to you is through a series of clever small vignettes that overwhelmingly choose these small intimate moments that manage to imply so much more than they outright say.
It's unabashedly 11/10 GOTY and maybe "game of this generation" to me, though I'm trying to give myself some time to get over the initial rush before I make that kind of call. Blows TW3 out of the water, and I loved TW3.