Well Nintendo can certainly take a lesson from Sony.
Sony puts out a new model Vita and the new model actually has improvements over it's predecessor, unlike Nintendo's 3DS XL, no extra thumbstick, no longer battery life, just a larger version with less battery life and different colors.
Sony changes front screen from OLED to an LCD not better but acceptable, and they improve the rear touch screen and add an extra 2 hours on to the battery life, and pack in a great game like Borderlands 2 for the same price of $199.......and in my opinion thats how you do it, and thats how you take care of your fanboys.
Take a lesson Nintendo !!!!