I've finally played it so there's my review.
Graphics: They're nice, pretty good. Kiddish, as always (Played Nintendo Land and Super Mario) and WAY better than Wii. Wii was like a Gamecube with sensors lol.
I still need to play a realistic game here, like BO2, but I liked so much the graphics.
Gameplay: This is what I hated on it. It's BULLSHIT!!
I don't like the GamePad. I mean, if I'd like a tablet, I'd buy an iPad and not a console. If I'd like a portable console, I'd buy 3DS or PS Vita. But I want a HOME CONSOLE, so it's very very exagerated from their part to add a screen on the gamepad, and also the relevance it has on the games. You have to switch between tablet and TV, which is a harass lol. It says "Look at your TV". "Look at your GamePad". Seriously, STUPID.
Games: Classic as always, but funny, must admit.
Price: Overpriced, as Wii. Considerating that it's $450 or so (Making the conversion) for Deluxe Edition (Black Console + Black GamePad + Nintendo Land), PLUS all their fucking accesories (Nunchuk, Pro Controller, etc) you'll be expending SO MUCH money!! Even more if you want to play with your friends.
If you want to save some money, you better buy an Xbox 360 or PS3. Will be WAY cheaper even if you include Kinect or PS Move.
Finally, IMO it's worth to get it IF you have money to spend, and like kiddish games. If you're from those who prefer COD, Halo, GoW, GoW, Killzone, then you better buy PS3/360 respectively
I actually played quite a bit at gamestop while I was there getting my PS3 games and stuff. It's quite interesting on what Nintendo has brought to you here.. But in the end as he said.. It's more appointed toward's little kids then adults..