I don’t think Nintendo’s scheme was ever that great as it blurred the difference between variant form factors (Game Boy Pocket vs Game Boy, Game Boy Micro/SP vs Game Boy Advance, DS Lite, 2/3DS XL, Wii Mini), pro models with limited exclusives (Game Boy Color, DSi, New 2/3DS), and full on new generations (Game Boy Advance, 3DS, Wii U).