I actually agree with part of what you say, Cunning, and in fairness I did say that I don't think Rivals was the game on the back of which 2.0 should be sold (sort of!). I cannot quite see where you get the idea that I want to see more of what came before, as that is far from what I think, as I completely agree with you when you say it failed before and so is not something that we would want to see again (and as I've said before, I really don't see me prancing around to ABBA or attempting to knock over 10 imaginary skittles. So repeating what has gone before is, for me, a huge no no.
I think it fair to say that we will always (politely!
) disagree over the inclusion of 2.0. The issue as I see it is where does something cease to be a gimmick and instead transcend into innovation. I do think that the heart-rate monitoring for Dead Rising 3 is mildly interesting, though I do hope that they do not just have a level at which they consider you scared, as I have a resting heart-rate of 51, which is below the average (and that's before I get on my opiates!). I also wonder whether it can tell the difference between fear and excitement, as both would elevate the heart-rate. But I digress, the question remains whether this is innovation or a gimmick. Generally it is far quicker to press a button than to let go of a controller, raise a hand and make a gesture (and with 1.0 correct the gesture multiple times!), so it needs to be something that cannot be done through the press of a button.
I'll be honest and say I don't know what I would consider to be innovative when it comes to the implementation of 2.0. I probably haven't given it enough thought, but also, as I don't make games I wouldn't know where to best implement Kinect functions. I think for me, for 2.0 to be implemented in an innovative manner, it needs to be something that a controller cannot do, which is where I do see the heart-rate monitor as adding something to gaming (though just how good it will be remains to be seen). When it comes to background sound, I have issues with its use in a game such as DS3, as I have a noisy 10 years old and 4 extremely noisy and horny cats and so I do hope that there will be the facility to switch off those elements of 2.0 that you don't want to try, as being eviscerated by a zombie because my oldest and slightly senile cat is being dry-humped by a frisky youngster (cat, not my 10 year old!), is not something that I look forward to.
For me its the subtle implementation of 2.0 where it does something beyond the capabilities of the controller, that it begins to justify its inclusion in the One box. The problem is that there doesn't as yet appear to be much in the way of innovation when it comes to the issue of gaming, and whilst it can be used for non-gaming related functions (changing TV channels, music etc. etc.) for me, the console is only for the purpose of gaming, and so the fact that it can do such things is irrelevant, though I might be tempted to use 2.0 for the purpose of Skype, but I guess that is unlikely as I have a webcam that I don't use for that purpose so probabilities are that wouldn't use the 2.0 for it either.