Why Nintendo shouldn't give new content:
1. Since New Super Mario Bros Wii released, almost all fans were claiming it's a SMB3 redux, and the graphics suck, so Nintendo should remake the game with exact same physics, music and level designs, no multiplayer and focus on extremly detailed graphics
2. No person ever says: OMG, Twilight Princess is far better that Ocarina of Time (even if it is), so Nintendo should Remake the game with exact same contents and polished graphics
3. What New series apart form wii series are multi-million sellers, if Nintendo gives something something new, fans atack them for no core, so they should give the exact same contents from years ago, no new games and remake all the old series over and over and over and over and over......................................
I can bet Nintendo being boycotted for lack of originality will be over ^_^