This is important and part of why Nintendo is where it's at and why they may have over-risked in their attempts to innovate and walked away from their audience in many regards.
Part of what makes consoles so appealing is consistency and nostalgia. Xbox & playstation have refined their controllers to keep them simple, effective, and appealing to gamers who grew up playing any version of those consoles in the past. Nintendo, starting w/ the N64, have felt the need to revamp their controller a little more each time, ultimately going HAM with the Wii.
With each new Nintendo console the power capabilities have become lesser and lesser, and will ultimately someday be generations behind while Sony & Microsoft put out consoles that are decent for the points at which they are released. Nintendo will likely be putting out a console this spring that is equivalent to the power of a 2012 desktop computer with a small percentage of the materials enclosed worthy of a 2016 gaming machine.
Obviously Nintendo is not attempting to do the safe play at any time these days, as their nostalgia value is in their precious first-party titles. Part of what made the Wii U fail was a horrific schedule of when those titles would come out, further bolstered by the awful forced gimmickry of the gamepad that nobody asked for or wanted.
They are ultimately heading down a weird road: One day there will be no 3DS or Nintendo; they will become a single malleable thing. Mobiles can be consoles can be mobiles, etc. The only thing preventing this is the consumer, and if the Switch doesn't sell, Nintendo may not have much time left.
I give them credit - they are pushing the boundaries and want to change the way gamers experience games, but they keep vying to change their audience and the general fringe consumer can't keep up OR doesn't want to spend $400 on a console that requires the user bending to the will of the console's wonky controller. If sales for this console fizzle out, I wouldn't be shocked if at some point Nintendo ceases console creation and focuses on either making a phone/mobile hybrid or becomes an outright developer of its own 1st party IPs, selling the rights to publish to Microsoft & Sony.