At least you can use those Blu-Ray boxes for storing other discs, unlike the boxes the Microsoft Points Cards come in.
But yeah, I do agree that the iTunes cards are much better, for the environment, and for retailers like myself.

From what I've seen, I think it uses the port on the WiiMote that your Nunchuk usually plugs into.
I think it would take a miracle-worker of a studio to meaningfully incorpoate this into a game, and make it anything other than a hideous gimmick.
Either that, or it'll be just like the Balance Board, which really hasn't been used for anything other than exercise or snowboarding/skateboarding, and there's not much else it can be used for.

I used to play the game years ago, and this looks like a great way to get back into it.
I think I'll hold out for a PC release though, I won't pay for XBox Live just to play it.

Personally, I think that the BBFC ratings are better at getting the point across. I work in games retail, and far too many parents think that PEGI are difficulty ratings.
Although, that said, this new "traffic light" system, and the fact that there is only one rating should help that.
Not that any parents are going to pay attention to the new ratings, they never have in the past.