Wow, I'll have to disagree with a lot of the things you said, Mario.. "Nothing new"? "A disaster"?
Firstly, how much more can you do with the Mario platformer formula while keeping it intuitive? Even with the jump to SM64, it was, at its core, the same basic game. Analogue control perfected platforming motion in the 3D world, and now, even with the new controller, not much can be improved on. This is exactly why, even though the development team tried many different things with the controller, Miyamoto overruled it since they didn't make controlling Mario any more intuitive. In fact, it was the opposite. Thinking about it, this is really the first console Nintendo has ever made whose control scheme is not tailored for a Mario game. The NES, well, we all know about Mario's escapades on it. The SNES was an extension. Mario 64 was a pioneer in analogue control, with the 64 controller. Then the GameCube, another extension, was the best controller for platformers, bar none. The Wii, on the other hand, is not designed specifically for a game like Mario, but instead opens the door to many other genres. So you want a "radically different" Mario? Well, now that would be a disaster..
And even with these limitations, Galaxy still uses the controller beautifully while staying true to its roots. It's the perfect balance of traditional platforming and new, innovative use of the controller without overusing it just for the novelty.
I'm also going to thoroughly disagree with you about the fact that you could be playing this on the GameCube. Graphics aside, did you watch the videos? Specifically the one with the Spider boss.. Tell me with a straight face that that can be done well with a GameCube controller. And this is just a glimpse of the ideas that Miyamoto has running through his head. There will no doubt be other brilliant ways that unlock the potential of the controller in Galaxy without utilising it in excess.
Mario Galaxy is my most anticipated game. I haven't felt this longing for a game since the 64 era. It does everything I expected and more, with some awesome additions. A platformer is extremely difficult to translate to this new control scheme, yet Miyamoto has found a way again. I just don't understand your concerns, Mario; I don't think you want a Mario game at all by the sounds of it, rather a completely new game with a new concept.