I doubt the 3DS could handle it, especially if they make the game bigger with Kickstarter.
Personally this title should be only on PC and Wii U. It would help Wii U sales a bit, and we all know thats a good thing. Sony has never had a Rare game on the Playstation (To my knowledge anyway, definitely Banjo was never on there), so putting it on PS4 might get a random buy from some one here and there, but ultimately wouldn't sell much. Not to mention PS4 doesn't need help selling more lol, it's doing fine with it's lack of good games, and if it isn't a realistic game where you have a gun and kill something, Sony fan's for the most part want nothing to do with it. And DEFINITELY don't put it on Xbox One, not after how Microsoft butchered Rareware, they crippled their creativity and obliterated their image. Microsoft/Xbox doesn't deserve it. It's like saying should Bungie give Microsoft any special support? HELL NO, not after how Microsoft treated them before they split ways. So that really only leaves Wii U, which honestly is where it belongs....on a Nintendo platform. Maybe it could work on the New 3DS with it's extra bit of power...but I have my PC, Wii U, and PS4, I personally want to get this on my Wii U. Imagine the gamepad uses! My PS4 just sits there, I hate the dang thing lol. Batman and Bloodbourne is all it's getting for the rest of the 8th gen. So please Playtonic, Wii U and PC only!