This, I hate saying this but Nintendo has been going down hill and should go third party, they don't have any real purpose in the console space, I mean all they have for E3 is Zelda? Really? Look at the competition.
If you look, you can see a perfect spot where the Wii should have fit in to make the perfect stair step effect.
The Wii was such a fad/fluke and got dropped as soon as everyone got over the hype and devs/pubs realized that they didn't want to make a special game for Nintendo instead of being able to port it. Nintendo didn't learn with the WiiU either.
That chart should read something like:
NES, SNES, N64, Game Cube, (insert kids toy holiday fad), WiiU.
When the NX drops and it's on par with the PS4 and XboxOne, Nintendo better hope that this generation lasts as long as the last one did because if Microsoft decides to pull the plug year 4 or 5 on the XB1 and bring out a new console, Sony will follow and Nintendo will be stuck holding the poopy diapers once again, having just released their now under powered console and history repeats itself.
But with all that said, I agree. Nobody is expecting much from the NX and Nintendo should probably eventually move on from the console game.