Ok, difficult topic. On one hand I am always in favor of innovation and trying new things. The possible Danger of finding yourself in an oversaturated market should they go the traditional high-power route being added shows further possible problems.
But I think we all should remember that the only thing worse than not innovating is innovating for the sole sake of innovation.
What is needed is the right kind of balance between tradition and innovation.
The Wii is a great example: It innovated in one, clear, easyly understood way: Motion Controls. Thats it! There was no more to it! You didnt even have to use them, hell some of the best games barely (Mario Galaxy) or never (Xenoblade) used them in the first place.
On the opposite end of the spectrum is the Wii U with a clunky controller that nobody, neither developers nor customers, really knows what to do with, but a myriad of functions: extra screen, gyroscope, NFC, Camera, touchscreen, etc...
The Idea in itself wasnt bad, but the execution was.
This is why the Switch looks equally awesome and worrysome:
It has crystallized the original Idea behind the Wii U to its purest form: giving us the flexibility to play where- and however we want, and it looks beautiful!
But it also sports several features that nobody seems to understand, namely HD Rumble and that IR Camera thingy!
HD Rumble at least sounds interesting, but the camera feels like a classic case of innovation for innovations sake: This sounds fun, maybe something cool comes out of this, so lets put it in and see!
Its this kind of thinking that got us stuff like the NFC reader. Yes they have the Amiibos for that now, but it took them quite some time, time that could have been spent on the actual games if they hadnt maneuvered themselves into that predicament.
So in conclusion: Yes, please continue to innovate Nintendo! But by god, you guys really have to learn when enough is enough! We were perfectly happy with the idea of a high-power hybrid system, there was no need to add all that extra stuff!