I don't get why people are very close-mind. The console is not even out and neither tried the controller, and already writting off. If by that people were, we will still be living in caverns. Thankfully, companies still have the audacy to try new things, whether they are successful or not.

Can't wait to try with my hands.

I think you combine the two patents.  One was about sticks and rolling bumpers, one was about a rounded touch screen.  Combine the two and you get the leaked image.  I believe there are two innovations going into the new device.

Also, I think this form of interface is both the home console and the portable.  I think the home screen will have a controller that mimics the portable, and the portable will run the same games at lower resolutions.

I can see that tbh, right now I'm picturing a gamepad using all this tech for the console and a N3DS like device employing the same tech for the handheld.

I would view a rounded device as more ergonomical than a square one.  Either way, both devices look similar to a TV remote when held verticle, which was the inspiration for the Wii Mote.  The device is actually superior to the Wii mote because ith as an analogue stick that has force-feedback.  The device may have a trigger below, we don't know what the bottom looks like.  Going with the idea that the device has removable grips (concluding by combining the patent images with grips and leaked image without), there is no reason a trigger couldn't be below.

So, a Wii-mote has a d-pad, an a-button and a trigger, as well as the lesser-used 1 and 2 buttons below.  The NX device has an analogue stick wich by it's nature could handle both the d-pad funtions and the A button function.  If there is a trigger below, the device with it's touch screen far exceeds the level of interaction provided by the Wii-mote and in the very least matches it for backward compatibility or future casual titles.

The DS-simulation does look awkward, but it is merely a patent design.  I mention it solely to describe the potential plans and versatility of the device.  They could have further grip ad-ons.  I personally don't handheld game, but I can see Nintendo catering strongly to this market since it is presently the bulk of their sales.  I think this device is being designed to meet the needs of this market as well as the home consumer.

And Nintendo tells square make one version and you get it on two systems.  And Square says ah, yeah, we're gonna bring DX and maybe FF to it.  And Nintendo says, wait, don't say anything yet!

I know!  I love a new style controller.  I love my XBox, but the interface is essentially the same as it was on the OG XBox.  When I picked up an SNES, half of the experience was the new interface in addition to the graphics.  This new NX device sounds facinating. 

Wiimotes are terrible for smash. Saying it's a step up from that if like saying a Prius would be a better racecar than a mini van

In your opinion.  A poster above is saying it's their go-to.

Keep in mind I didn't come up with the device, I'm only suggesting what is likely.  And contrary to what you are saying, I do think Nintendo is going to release a device with an innovative/expesive input. We've seen the patents, we know their style.  They don't learn.

I think this could work much better than the Gamepad though.  I do think the device will be excellent for games I play, whether that be classic style Nintendo games or dual-analogue third party titles.  It may or may not be a lesser input for Wii-mote syled games, but I could live with that, I never really loved them.

Looks awful, will be expensive, why can't Nintendo make a good controller?