With the Switch off to a great start and likely stealing sales from the 3DS family of systems, it's time to start asking ourselves what we'd like to see from a dedicated handheld from Nintendo in the future.  Certainly it's a possibility that there won't be one, given the handheld nature of the Switch, but for hypothetical purposes how would you design the next system?  And would you buy it?  And if so...at what price point.

I call mine the Nintendo Switch.

The next reiteration of the Switch to come in less than two years.

Ok, ok.
So it's a high definition handheld... that's a tablet! And the tablet has these 2 detachable controllers on the side than can act as a Wii Mote and Nunchuk and one of them as a classic styled NES/SNES controller. It also has a docking station that you can hook up to the TV, and when you put it inside the docking station, the game switches *winkwinknudgenudge* from the screen on the tablet to your TV and you can play it like it's a console!
I call it... THE NINTENDO SWITCH!

it's been done.

Take Switch.

Die Shrink to 14nm.

Shave off black bezels.

Done.

My original concept, do not steal:

The only way I see them releasing a successor to the 3DS or "portable" is creating a smaller Switch unit and call it something like the Switch-Mini that will be unveiled alongside the the Switch successor in 2 or 3 years (like the iPhone 7 to 7 plus or Galaxy s8 to s8+). That can easily fit in a pocket. Both will use the X2 (or X3 if Nvidia releases an X4 by then). I fully believe the days of the dual screen (aka DS-line) for Nintendo is numbered. Maybe it loses some of its 'special' features (removable joycons, etc.), or maybe they make the new mini-dock an optional accessory (as its supposed to be a portable device), or downgrade the display (720p screen while the Switch 2 gets 1080p) to get it at a 'cheap' pricepoint of $50-100 less than the regular Switch. My gf would definitely get a Switch-Mini, since she says she can't put the normal Switch in her pocket and is the reason she won't get the system even with a new Pokemon game (main/only reason she owns a 3DS).

Its easier and more efficient for Nintendo to have one platform and release all games compatible.

That's OK for a Switch-lite but it's still too big for a dedicated HH next to Switch, imo. Clamshell 3DS-sized Switch with 3DS/DS BC would be good competition for Switch. Lose joycons and portable muliplayer in exchange for more portability, battery and BC.

My design is a small black tablet, with detachable sides, and it connects to the TV, thinking the name should be something like, Swatch... no, the Switch.