Idk, that looks pretty silly, what happens if during an intense gaming session, you pull the controller handles off of the screen?
Only time will tell, but if that is indeed the next system, (a glorified Wii U gamepad) then I don't know how easy this thing will be to sell to the non-believer.
im assuming it will have some sort of locking mechanism to make sure you cant do just that. to me it look like the pad is either too large to comfortably use or the buttons are just made samller than current ones.
when it is in its smallest configuration (bottom left picture) it looks like the buttons are way too close to the d-pad... like hit right every time you press the Y button close.
The buttons do look too far apart when the screen is attached to me as well, especially the L and R buttons (How are you even supposed to comfortably hit them?) The bottom left configuration looks like a joke, it's like holding a circle, how do they expect people to play that way? The bottom right configuration also looks just a bit too close together for me as well. Also, I'm extremely against the sliders as opposed to analog sticks, my 3DS ones always feel like they are going to break off when I'm playing something intensive to the slider pad.
Hopefully they refine it a scosche before the release like they did with the Wii U's gamepad. Shoot, maybe the GamePad will just be compatible and I'll use that instead.
I just noticed a red flag here too, there's no NFC touchpoint, unless it's in the screen like the New 3DS and also it doesn't appear that this controller has a touch screen or else you figure they'd show it and I don't see a spot for a stylus to go on this thing to boot.
Also this is kind of nitpicky, but I'm sick of the way Nintendo keeps using the Wii style d-pad and buttons, they really ought to do something new (or old, bring back the SNES/N64 style d-pad, I loved that thing!) to differentiate themselves from a ten-year-old design. Not a fan of the colored buttons either (i know it pays homage to the EU SNES and Super Famicom but it makes it look childish to me)
Only time will tell if this is the REAL controller/console, if it is I hope a few tweaks/refinements are made.