What's wrong with it? It's a great idea. Especially with 3DS (or New 3DS, being more powerful and having better graphics) with the hotbar and inventory on the bottom screen and the rest on top. And who wouldn't like to see this game in 3D... well, it seems that not many people like 3DS's 3D, but I love it.
As for Wii U, it would be a nice way to carry around a big screen console version, though I don't know the power comparison between it and Xbox 360 or PS3.