It is tough getting a solid read on this device, as Nintendo has a Jobs-ian mystique with some. This perception confuses the hell out of me, since their core market has been children and non-gamers for years now. If people are thrilled with Mario and Zelda rehashes, even though neither franchise has seen high level innovation since the N64 days, good on them I guess.
I have two small children and there's just no way. I read every Wii U thread that comes down the pipe here and elsewhere, and the impression I get is of a system that is woefully underbaked even by "launch console" standards. It has all the appeal of a Gamecube; it has that same stench of disappointment, with a generous helping of hardware/software bugs and no post-N64 glow of promise to buy based on past performance.
Suffice to say I disagree with the Mario / Zelda assertion, particularly Mario, where I think the franchise has had some of its very (very!) best games on Wii and 3DS... but to each their own. People come to like other things, or want other things in gaming, just like anything else... it happens.
It'd be handy if NeoGAF had the same feature as Miiverse really, one that told you definitively if someone owned the thing and the games, because I suspect a lot of the circular griping and vexxing heaped upon the console here is coming from people who don't yet have one and are simply miring themselves in the hyper critical drama of sales threads, game SKU comparisons and isolated reports of fault or failure.
If you pop onto the actual communities on the console, you will see very few people unhappy with what they are experiencing... and maybe that's because it's largely a Nintendo hardcore that have taken the console up first. But maybe its because people quite like it?
There are some serious, legitimate complaints to be had -- if I'd have had trouble getting it to work with my home network like some people did initially, I'd have been unhappy. If I were experiencing lock ups like some people have, I would be unhappy. If I had experienced ridiculous download speeds like some people have, I would have been unhappy. I simply haven't experienced those things. I am not entirely happy with the speed of the console returning to its home menu from a retail or download game (although its quick enough from the base Miiverse/friends list/browser functions)... but a lot of the games, the web browser and miiverse/social-interaction aspects are all good, and deserving of some praise, as is the gamepad and the added perks it provides generally.
Given the non-unique nature of the launch lineup, and the hitherto still-secret nature of the future lineup -- I think it's roughly performing how it deserves to -- but I have no concerns about its future. With proper backing and further improvements, I think it will have excellent word of mouth and defy a lot of expectations here - just like the Wii.