I've played that in N64 when I was 7 or 8 years old
It's nice but it didn't take too long before I get bored and went back to Pokemon Stadium
Edit: By the way this is how a Pokemon Main series game on Switch should look like, not that overused 3DS assets from Sword & Shield
Having completed Sword and Shield... Visually the game looked like a dogs breakfast, I think there have been 6th gen games where 2D sprites stuck out less.
..And I felt the game didn't really change it's narrative all that much over Red/Blue, which was the last mainline pokemon game I had played before that one... Seems the franchise might have settled on a formula and stuck with it, which isn't a bad thing, but not a way to impress me.
Saying that, it wasn't a terrible game... But I expected more of a gameplay/story leap going from Gameboy > Gameboy Colour > Gameboy Advance > Nintendo DS > Nintendo 3DS > Nintendo Switch... And more of a visual leap on top of it.
And I felt they wanted to take the game open world, but just didn't or couldn't for some reason.
The game looks great but the sunset screenshot in particular looks a little ... low res? Kinda blurry? Which sucks because it's the most artistically interesting scene.
Seems the water shader might be quarter-resolution, giving everything under the water surface some excessive stair-stepping, textures seems to be pretty decent for a Switch game, likely augmented by the strong artistic direction.
Lacks Anti-Aliasing and decent texture filtering, but those seem to be common attributes with Nintendo titles.
Not enough engine footage, but I am going to assume it's using baked lighting and some shadowing, which will change depending on various variables, more developer effort, but saves on computation.
High quality post-process effects are front and center like depth of field... It's a must when your game revolves around photography.
All in all.. I am keen to check this game out, actually enjoyed the N64 version back in the day for what it was.