Between old games still being there for us to play, new free to play web games, playerbases condensing into specific multiplayer games, and the extra power XBOX and PS4 go, Nintendo can only offer us sequels to popular games they had. Cell phones and Tablets are huge competitors to Nintendo too. I think Nintendo could pull out a win by stop gimmicking it up with their controller. Better yet, they could make the defacto standard controller designed for cell phone/Tablets and continue to make software.
I know a lot of people had fun on the N64,gamecube,wii, and WiiU, but the last game system I took serious that Nintendo made was the Snes. It was the last game system which controller wasn't a gimmick, and before PC games became generally better in terms of content. Now don't get me wrong, there were a couple games there after SNES that I know are popular, but I didn't get into. I always thought the idea of console gaming was focused on the controller to be action reflex oriented, and hidden buttons underneath the controller, or motion sensors just distract. The best games link your brain with pure cerebral responses to what happens in the game. If your controller requires 200 extra milliseconds just to engage the button, or you can't hit all the buttons with any hand configuration, you screwed up as a game controller designer. The games should be the toys, not the gimmick controllers.