I love solid controllers like the one on the 360. They feel well built, and not as flimsy as the ps3 one feels, I feel like I'm gonna snap it in half when I use it :s
It will be a bit bulky probably, but certainly easy to hold. Your hands will only be a bit further apart than usual.
That shouldn't be a problem, or should I remind you at this controller?
I think Nintendo was influenced by their own DS, not by tablets.
And no, it won't double as a standalone device, because it has
no processing power. The Console itself handles everything. They mentioned this in the livestream.
EDIT: does anyone know if those gamecube keyboard controllers work with a computer? I'm guessing it's not a usb controller, but is there an adapter maybe? This would be pretty cool, actually.