People keep making amazing mods for The Witcher 3: Wild Hunt. A recent example comes from Reddit user Linas_002, who used a mod to downgrade the game's graphics to make it look like a 3DS title.
As you can see in the image gallery below, the Witcher 3's world looks a lot lower-res than you might remember it. There is a certain level of charm, though, I'd say, and it makes the case that a stylized Witcher game might not be such a wild idea. Check out all the images in the gallery below.
Witcher 3 Nintendo DS version
According to Linas_002, you manually set the TextureMipBias to value 8 in the game's .ini files to make the game look this way. Alternatively, the person says you can use this mod to set that value in-game. As always, be careful when downloading things from the internet.
Some of The Witcher 3's other standout mods let you do things like __play as Ciri, Triss, or Yennefer, while another mod lets you __play in first-person, not unlike Skyrim.
The Witcher 3's Game of the Year edition came out in August, featuring the award-winning base game and its two expansions, Hearts of Stone and Blood and Wine. A fourth game in the core Witcher series has not been ruled out, but don't expect it to come out soon.