It's hard enough to capture lightning in a bottle once I don't think they've done it again. Don't get me wrong I think it's pretty awesome, as a gamer I think the Wii U seems better now than the Wii did at launch. However it doesn't have the magic. I don't see Nursing Homes running Mario Chase tournaments and I don't think I'll hear my Dad randomly ask "want a game of Luigi's Ghost Mansion?". It's just not going to happen.
That could all change with a well thought out piece of software but right now.... I don't think they've got it with Nintendo Land. Personally I'm fine with that if it means I still get proper third party support and HD Mario/Zelda. It doesn't have the "magic" of the Wii though