I think it could be a good idea. There'd have to be an update to change how the UI works, but that shouldn't be too difficult. How many games actually rely on the gamepad? A game like Sonic Lost World is gamepad only, but could be easily patched. A game like ZombiU requires the pad, and couldn't be updated. So there could be a lot of confusion regarding games.
"On my business card I am a corporate president. In my mind I am a game developer. But in my heart I am a gamer." - Satoru Iwata