Ian Sane, is there anything that suggests your suspicions are wrong? I mean, I'm a pretty staunch Nintendo fan, but if I had your stance on future-proofing the console, I wouldn't be holding out much hope right now. It's pretty clear from this Iwata Asks that Nintendo had some other priorities in hardware design that might've prevented them having as much focus on hardware brute strength as some would like.
Well the Wii U appears to be more powerful than the current gen. A year ago I was legitimately afraid that we would get like a PS3 level system at best. I was afraid there would be no speculation and that it would be plain as day that Nintendo was going with last gen hardware yet again. Right now the worst case scenario looks more like Nintendo will be in between.
Sony and MS also had problems with their systems being too expensive at launch. I highly doubt Sony is going to have a $600 console again. So they might not go as big this time around because it just isn't economically feasible. So Nintendo still might be okay.
This is like a shotputt competition. Nintendo had the first throw and last time they threw like half the distance everyone else did. This time they threw okayish. Well that throw MIGHT be far enough. They didn't totally botch it but it wasn't really all that great either.
Of coures I WANT the Wii U hardware to be good enough. We're not yet at a point where we can say for certain that it won't be so I'm hoping, but without much confidence, that it will be.