Some comments on your points:Unfortunately the market has moved on and people want more than that. People want a good infrastructure (MiiVerse is OK but it could be so much more). People want a great selection of indy games (indy has skyrocketted this gen but the eShop is basically dead). People want connected experiences, dare I say it, much more than local multiplayer. And a large portion of gamers want some decent specs to realise more grander ideas than they have been playing the last 8 years.
Miiverse is evolving to something grand, private communities is a huge feature, I'm not sure people realize it yet.
And we have new miiverse updates every month since launch.
I believe private communities will solve some Nintendo issues with online. We know it's almost ready, and that they will include its support in WiiFit U, out of all games. Based on that, and the fact private communities is a mean to protect their younger audience (something they are paranoïd of), we can expect some progress here for future games. The bare minimum is to use this feature to include leaderboards. When you are one of the few serious arcade games providers, you ought to include a mean to compete online for scores.
3rd parties (those who are still there) can and do support online as usual, free of charge.
About local multiplayer. Nintendo doesn't get half the praise they deserve for what they are achieving in that field. Well at least kids value that. And kids are more important to Nintendo than to MS and Sony. Nintendo's existence relies on Pokemon, Mario, mascots. That's a still a chock to some, but that's their most important audience. Good thing is, they are still years ahead of everyone else in building game design made to please kids and gamers. most of their games work on all levels, like a good Pixar movie.
Now about the decent specs:
I'm playing the Last of Us which is blowing my mind. GTA5 also looks more interesting than any next gen game I've seen at E3.
There are more creativity in Nintendo land and Game & Wario than in lots of AAA games I've played recently.
I don't believe specs is the sole mean to support grander ideas than what we have been playing these last 8 years. Based on what we've seen at E3, it's not the case yet. It probably will eventually. On the one hand, I'm afraid studios will be even more risk averse. On the other hand, I can't help but marvel at what a studio like Naughty Dogs will do on PS4, or how amazing a real next gen FIFA will be. B
Wii U's audience is people who enjoy Nintendo game design behind their mascots.
Can Wii U specs & GamePad/Wiimote versatility bring new things, or old things people still love, while refining gameplay and convenience to engage with the medium (through off tv)? Answer is yes. I believe Wii U is a good foundation to foster creativity and greatness.
Real problems Wii U faces are not the ones you raised.
It's all about the 8 months Nintendo franchise drought/delays (execution problem) ; the dissonance between the price to entry - moreso with the delays - and a family oriented target audience ; and the amateurish handling of their communication, leading to an easy and effective execution from people not having interest in Nintendo taking off.